diff --git a/services/web/app/src/Features/DocumentUpdater/DocumentUpdaterHandler.js b/services/web/app/src/Features/DocumentUpdater/DocumentUpdaterHandler.js
index 2f7bfeb996..082856052a 100644
--- a/services/web/app/src/Features/DocumentUpdater/DocumentUpdaterHandler.js
+++ b/services/web/app/src/Features/DocumentUpdater/DocumentUpdaterHandler.js
@@ -1,445 +1,395 @@
-/* eslint-disable
-    camelcase,
-    handle-callback-err,
-    max-len,
-    no-unused-vars,
-*/
-// TODO: This file was created by bulk-decaffeinate.
-// Fix any style issues and re-enable lint.
-/*
- * decaffeinate suggestions:
- * DS101: Remove unnecessary use of Array.from
- * DS102: Remove unnecessary code created because of implicit returns
- * DS103: Rewrite code to no longer use __guard__
- * DS207: Consider shorter variations of null checks
- * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
- */
-let DocumentUpdaterHandler
-let request = require('request')
-request = request.defaults()
+const request = require('request').defaults()
 const settings = require('settings-sharelatex')
 const _ = require('underscore')
 const async = require('async')
 const logger = require('logger-sharelatex')
 const metrics = require('metrics-sharelatex')
-const { Project } = require('../../models/Project')
-const { promisifyAll } = require('../../util/promises')
+const { promisify } = require('util')
 
-module.exports = DocumentUpdaterHandler = {
-  flushProjectToMongo(project_id, callback) {
-    if (callback == null) {
-      callback = function(error) {}
-    }
-    return DocumentUpdaterHandler._makeRequest(
-      {
-        path: `/project/${project_id}/flush`,
-        method: 'POST'
-      },
-      project_id,
-      'flushing.mongo.project',
-      callback
-    )
-  },
+module.exports = {
+  flushProjectToMongo,
+  flushMultipleProjectsToMongo,
+  flushProjectToMongoAndDelete,
+  flushDocToMongo,
+  deleteDoc,
+  getDocument,
+  setDocument,
+  getProjectDocsIfMatch,
+  clearProjectState,
+  acceptChanges,
+  deleteThread,
+  resyncProjectHistory,
+  updateProjectStructure,
+  promises: {
+    flushProjectToMongo: promisify(flushProjectToMongo),
+    flushMultipleProjectsToMongo: promisify(flushMultipleProjectsToMongo),
+    flushProjectToMongoAndDelete: promisify(flushProjectToMongoAndDelete),
+    flushDocToMongo: promisify(flushDocToMongo),
+    deleteDoc: promisify(deleteDoc),
+    getDocument: promisify(getDocument),
+    setDocument: promisify(setDocument),
+    getProjectDocsIfMatch: promisify(getProjectDocsIfMatch),
+    clearProjectState: promisify(clearProjectState),
+    acceptChanges: promisify(acceptChanges),
+    deleteThread: promisify(deleteThread),
+    resyncProjectHistory: promisify(resyncProjectHistory),
+    updateProjectStructure: promisify(updateProjectStructure)
+  }
+}
 
-  flushMultipleProjectsToMongo(project_ids, callback) {
-    if (callback == null) {
-      callback = function(error) {}
-    }
-    const jobs = []
-    for (let project_id of Array.from(project_ids)) {
-      ;(project_id =>
-        jobs.push(callback =>
-          DocumentUpdaterHandler.flushProjectToMongo(project_id, callback)
-        ))(project_id)
-    }
-    return async.series(jobs, callback)
-  },
+function flushProjectToMongo(projectId, callback) {
+  _makeRequest(
+    {
+      path: `/project/${projectId}/flush`,
+      method: 'POST'
+    },
+    projectId,
+    'flushing.mongo.project',
+    callback
+  )
+}
 
-  flushProjectToMongoAndDelete(project_id, callback) {
-    if (callback == null) {
-      callback = function() {}
-    }
-    const timer = new metrics.Timer('delete.mongo.project')
-    const url = `${settings.apis.documentupdater.url}`
-    return DocumentUpdaterHandler._makeRequest(
-      {
-        path: `/project/${project_id}`,
-        method: 'DELETE'
-      },
-      project_id,
-      'flushing.mongo.project',
-      callback
-    )
-  },
+function flushMultipleProjectsToMongo(projectIds, callback) {
+  const jobs = projectIds.map(projectId => callback => {
+    flushProjectToMongo(projectId, callback)
+  })
+  async.series(jobs, callback)
+}
 
-  flushDocToMongo(project_id, doc_id, callback) {
-    if (callback == null) {
-      callback = function(error) {}
-    }
-    return DocumentUpdaterHandler._makeRequest(
-      {
-        path: `/project/${project_id}/doc/${doc_id}/flush`,
-        method: 'POST'
-      },
-      project_id,
-      'flushing.mongo.doc',
-      callback
-    )
-  },
+function flushProjectToMongoAndDelete(projectId, callback) {
+  _makeRequest(
+    {
+      path: `/project/${projectId}`,
+      method: 'DELETE'
+    },
+    projectId,
+    'flushing.mongo.project',
+    callback
+  )
+}
 
-  deleteDoc(project_id, doc_id, callback) {
-    if (callback == null) {
-      callback = function() {}
-    }
-    return DocumentUpdaterHandler._makeRequest(
-      {
-        path: `/project/${project_id}/doc/${doc_id}`,
-        method: 'DELETE'
-      },
-      project_id,
-      'delete.mongo.doc',
-      callback
-    )
-  },
+function flushDocToMongo(projectId, docId, callback) {
+  _makeRequest(
+    {
+      path: `/project/${projectId}/doc/${docId}/flush`,
+      method: 'POST'
+    },
+    projectId,
+    'flushing.mongo.doc',
+    callback
+  )
+}
 
-  getDocument(project_id, doc_id, fromVersion, callback) {
-    if (callback == null) {
-      callback = function(error, doclines, version, ranges, ops) {}
-    }
-    return DocumentUpdaterHandler._makeRequest(
-      {
-        path: `/project/${project_id}/doc/${doc_id}?fromVersion=${fromVersion}`,
-        json: true
-      },
-      project_id,
-      'get-document',
-      function(error, doc) {
-        if (error != null) {
-          return callback(error)
-        }
-        return callback(null, doc.lines, doc.version, doc.ranges, doc.ops)
-      }
-    )
-  },
+function deleteDoc(projectId, docId, callback) {
+  _makeRequest(
+    {
+      path: `/project/${projectId}/doc/${docId}`,
+      method: 'DELETE'
+    },
+    projectId,
+    'delete.mongo.doc',
+    callback
+  )
+}
 
-  setDocument(project_id, doc_id, user_id, docLines, source, callback) {
-    if (callback == null) {
-      callback = function(error) {}
-    }
-    return DocumentUpdaterHandler._makeRequest(
-      {
-        path: `/project/${project_id}/doc/${doc_id}`,
-        method: 'POST',
-        json: {
-          lines: docLines,
-          source,
-          user_id
-        }
-      },
-      project_id,
-      'set-document',
-      callback
-    )
-  },
-
-  getProjectDocsIfMatch(project_id, projectStateHash, callback) {
-    // If the project state hasn't changed, we can get all the latest
-    // docs from redis via the docupdater. Otherwise we will need to
-    // fall back to getting them from mongo.
-    if (callback == null) {
-      callback = function(error, docs) {}
-    }
-    const timer = new metrics.Timer('get-project-docs')
-    const url = `${
-      settings.apis.documentupdater.url
-    }/project/${project_id}/get_and_flush_if_old?state=${projectStateHash}`
-    return request.post(url, function(error, res, body) {
-      timer.done()
-      if (error != null) {
-        logger.warn(
-          { err: error, url, project_id },
-          'error getting project docs from doc updater'
-        )
+function getDocument(projectId, docId, fromVersion, callback) {
+  _makeRequest(
+    {
+      path: `/project/${projectId}/doc/${docId}?fromVersion=${fromVersion}`,
+      json: true
+    },
+    projectId,
+    'get-document',
+    function(error, doc) {
+      if (error) {
         return callback(error)
       }
-      if (res.statusCode === 409) {
-        // HTTP response code "409 Conflict"
-        // Docupdater has checked the projectStateHash and found that
-        // it has changed. This means that the docs currently in redis
-        // aren't the only change to the project and the full set of
-        // docs/files should be retreived from docstore/filestore
-        // instead.
-        return callback()
-      } else if (res.statusCode >= 200 && res.statusCode < 300) {
-        let docs
-        try {
-          docs = JSON.parse(body)
-        } catch (error1) {
-          error = error1
-          return callback(error)
-        }
-        return callback(null, docs)
-      } else {
-        logger.warn(
-          { project_id, url },
+      callback(null, doc.lines, doc.version, doc.ranges, doc.ops)
+    }
+  )
+}
+
+function setDocument(projectId, docId, userId, docLines, source, callback) {
+  _makeRequest(
+    {
+      path: `/project/${projectId}/doc/${docId}`,
+      method: 'POST',
+      json: {
+        lines: docLines,
+        source,
+        user_id: userId
+      }
+    },
+    projectId,
+    'set-document',
+    callback
+  )
+}
+
+function getProjectDocsIfMatch(projectId, projectStateHash, callback) {
+  // If the project state hasn't changed, we can get all the latest
+  // docs from redis via the docupdater. Otherwise we will need to
+  // fall back to getting them from mongo.
+  const timer = new metrics.Timer('get-project-docs')
+  const url = `${
+    settings.apis.documentupdater.url
+  }/project/${projectId}/get_and_flush_if_old?state=${projectStateHash}`
+  request.post(url, function(error, res, body) {
+    timer.done()
+    if (error) {
+      logger.warn(
+        { err: error, url, projectId },
+        'error getting project docs from doc updater'
+      )
+      return callback(error)
+    }
+    if (res.statusCode === 409) {
+      // HTTP response code "409 Conflict"
+      // Docupdater has checked the projectStateHash and found that
+      // it has changed. This means that the docs currently in redis
+      // aren't the only change to the project and the full set of
+      // docs/files should be retreived from docstore/filestore
+      // instead.
+      callback()
+    } else if (res.statusCode >= 200 && res.statusCode < 300) {
+      let docs
+      try {
+        docs = JSON.parse(body)
+      } catch (error1) {
+        error = error1
+        return callback(error)
+      }
+      callback(null, docs)
+    } else {
+      logger.warn(
+        { projectId, url },
+        `doc updater returned a non-success status code: ${res.statusCode}`
+      )
+      callback(
+        new Error(
           `doc updater returned a non-success status code: ${res.statusCode}`
         )
-        return callback(
-          new Error(
-            `doc updater returned a non-success status code: ${res.statusCode}`
-          )
-        )
-      }
-    })
-  },
-
-  clearProjectState(project_id, callback) {
-    if (callback == null) {
-      callback = function(error) {}
-    }
-    return DocumentUpdaterHandler._makeRequest(
-      {
-        path: `/project/${project_id}/clearState`,
-        method: 'POST'
-      },
-      project_id,
-      'clear-project-state',
-      callback
-    )
-  },
-
-  acceptChanges(project_id, doc_id, change_ids, callback) {
-    if (change_ids == null) {
-      change_ids = []
-    }
-    if (callback == null) {
-      callback = function(error) {}
-    }
-    return DocumentUpdaterHandler._makeRequest(
-      {
-        path: `/project/${project_id}/doc/${doc_id}/change/accept`,
-        json: {
-          change_ids
-        },
-        method: 'POST'
-      },
-      project_id,
-      'accept-changes',
-      callback
-    )
-  },
-
-  deleteThread(project_id, doc_id, thread_id, callback) {
-    if (callback == null) {
-      callback = function(error) {}
-    }
-    const timer = new metrics.Timer('delete-thread')
-    return DocumentUpdaterHandler._makeRequest(
-      {
-        path: `/project/${project_id}/doc/${doc_id}/comment/${thread_id}`,
-        method: 'DELETE'
-      },
-      project_id,
-      'delete-thread',
-      callback
-    )
-  },
-
-  resyncProjectHistory(project_id, projectHistoryId, docs, files, callback) {
-    return DocumentUpdaterHandler._makeRequest(
-      {
-        path: `/project/${project_id}/history/resync`,
-        json: { docs, files, projectHistoryId },
-        method: 'POST'
-      },
-      project_id,
-      'resync-project-history',
-      callback
-    )
-  },
-
-  updateProjectStructure(
-    project_id,
-    projectHistoryId,
-    userId,
-    changes,
-    callback
-  ) {
-    if (callback == null) {
-      callback = function(error) {}
-    }
-    if (
-      !(settings.apis.project_history != null
-        ? settings.apis.project_history.sendProjectStructureOps
-        : undefined)
-    ) {
-      return callback()
-    }
-
-    const docUpdates = DocumentUpdaterHandler._getUpdates(
-      'doc',
-      changes.oldDocs,
-      changes.newDocs
-    )
-    const fileUpdates = DocumentUpdaterHandler._getUpdates(
-      'file',
-      changes.oldFiles,
-      changes.newFiles
-    )
-    const projectVersion = __guard__(
-      changes != null ? changes.newProject : undefined,
-      x => x.version
-    )
-
-    if (docUpdates.length + fileUpdates.length < 1) {
-      return callback()
-    }
-
-    if (projectVersion == null) {
-      logger.warn(
-        { project_id, changes, projectVersion },
-        'did not receive project version in changes'
       )
-      return callback(new Error('did not receive project version in changes'))
     }
+  })
+}
 
-    return DocumentUpdaterHandler._makeRequest(
-      {
-        path: `/project/${project_id}`,
-        json: {
-          docUpdates,
-          fileUpdates,
-          userId,
-          version: projectVersion,
-          projectHistoryId
-        },
-        method: 'POST'
-      },
-      project_id,
-      'update-project-structure',
-      callback
-    )
-  },
+function clearProjectState(projectId, callback) {
+  _makeRequest(
+    {
+      path: `/project/${projectId}/clearState`,
+      method: 'POST'
+    },
+    projectId,
+    'clear-project-state',
+    callback
+  )
+}
 
-  _makeRequest(options, project_id, metricsKey, callback) {
-    const timer = new metrics.Timer(metricsKey)
-    return request(
-      {
-        url: `${settings.apis.documentupdater.url}${options.path}`,
-        json: options.json,
-        method: options.method || 'GET'
-      },
-      function(error, res, body) {
-        timer.done()
-        if (error != null) {
-          logger.warn(
-            { error, project_id },
-            'error making request to document updater'
-          )
-          return callback(error)
-        } else if (res.statusCode >= 200 && res.statusCode < 300) {
-          return callback(null, body)
-        } else {
-          error = new Error(
-            `document updater returned a failure status code: ${res.statusCode}`
-          )
-          logger.warn(
-            { error, project_id },
-            `document updater returned failure status code: ${res.statusCode}`
-          )
-          return callback(error)
-        }
-      }
-    )
-  },
+function acceptChanges(projectId, docId, changeIds, callback) {
+  _makeRequest(
+    {
+      path: `/project/${projectId}/doc/${docId}/change/accept`,
+      json: { change_ids: changeIds },
+      method: 'POST'
+    },
+    projectId,
+    'accept-changes',
+    callback
+  )
+}
 
-  _getUpdates(entityType, oldEntities, newEntities) {
-    let id, newEntity, oldEntity
-    if (!oldEntities) {
-      oldEntities = []
-    }
-    if (!newEntities) {
-      newEntities = []
-    }
-    const updates = []
+function deleteThread(projectId, docId, threadId, callback) {
+  _makeRequest(
+    {
+      path: `/project/${projectId}/doc/${docId}/comment/${threadId}`,
+      method: 'DELETE'
+    },
+    projectId,
+    'delete-thread',
+    callback
+  )
+}
 
-    const oldEntitiesHash = _.indexBy(oldEntities, entity =>
-      entity[entityType]._id.toString()
-    )
-    const newEntitiesHash = _.indexBy(newEntities, entity =>
-      entity[entityType]._id.toString()
-    )
+function resyncProjectHistory(
+  projectId,
+  projectHistoryId,
+  docs,
+  files,
+  callback
+) {
+  _makeRequest(
+    {
+      path: `/project/${projectId}/history/resync`,
+      json: { docs, files, projectHistoryId },
+      method: 'POST'
+    },
+    projectId,
+    'resync-project-history',
+    callback
+  )
+}
 
-    // Send deletes before adds (and renames) to keep a 1:1 mapping between
-    // paths and ids
-    //
-    // When a file is replaced, we first delete the old file and then add the
-    // new file. If the 'add' operation is sent to project history before the
-    // 'delete' then we would have two files with the same path at that point
-    // in time.
-    for (id in oldEntitiesHash) {
-      oldEntity = oldEntitiesHash[id]
-      newEntity = newEntitiesHash[id]
-
-      if (newEntity == null) {
-        // entity deleted
-        updates.push({
-          id,
-          pathname: oldEntity.path,
-          newPathname: ''
-        })
-      }
-    }
-
-    for (id in newEntitiesHash) {
-      newEntity = newEntitiesHash[id]
-      oldEntity = oldEntitiesHash[id]
-
-      if (oldEntity == null) {
-        // entity added
-        updates.push({
-          id,
-          pathname: newEntity.path,
-          docLines: newEntity.docLines,
-          url: newEntity.url,
-          hash: newEntity.file != null ? newEntity.file.hash : undefined
-        })
-      } else if (newEntity.path !== oldEntity.path) {
-        // entity renamed
-        updates.push({
-          id,
-          pathname: oldEntity.path,
-          newPathname: newEntity.path
-        })
-      }
-    }
-
-    return updates
+function updateProjectStructure(
+  projectId,
+  projectHistoryId,
+  userId,
+  changes,
+  callback
+) {
+  if (
+    settings.apis.project_history == null ||
+    !settings.apis.project_history.sendProjectStructureOps
+  ) {
+    return callback()
   }
-}
-module.exports.promises = promisifyAll(DocumentUpdaterHandler, {
-  without: ['_getUpdates']
-})
 
-const PENDINGUPDATESKEY = 'PendingUpdates'
-const DOCLINESKEY = 'doclines'
-const DOCIDSWITHPENDINGUPDATES = 'DocsWithPendingUpdates'
+  const {
+    deletes: docDeletes,
+    adds: docAdds,
+    renames: docRenames
+  } = _getUpdates('doc', changes.oldDocs, changes.newDocs)
+  const {
+    deletes: fileDeletes,
+    adds: fileAdds,
+    renames: fileRenames
+  } = _getUpdates('file', changes.oldFiles, changes.newFiles)
+  const updates = [].concat(
+    docDeletes,
+    fileDeletes,
+    docAdds,
+    fileAdds,
+    docRenames,
+    fileRenames
+  )
+  const projectVersion =
+    changes && changes.newProject && changes.newProject.version
 
-const keys = {
-  pendingUpdates(op) {
-    return `${PENDINGUPDATESKEY}:${op.doc_id}`
-  },
-  docsWithPendingUpdates: DOCIDSWITHPENDINGUPDATES,
-  docLines(op) {
-    return `${DOCLINESKEY}:${op.doc_id}`
-  },
-  combineProjectIdAndDocId(project_id, doc_id) {
-    return `${project_id}:${doc_id}`
+  if (updates.length < 1) {
+    return callback()
   }
+
+  if (projectVersion == null) {
+    logger.warn(
+      { projectId, changes, projectVersion },
+      'did not receive project version in changes'
+    )
+    return callback(new Error('did not receive project version in changes'))
+  }
+
+  _makeRequest(
+    {
+      path: `/project/${projectId}`,
+      json: {
+        updates,
+        userId,
+        version: projectVersion,
+        projectHistoryId
+      },
+      method: 'POST'
+    },
+    projectId,
+    'update-project-structure',
+    callback
+  )
 }
 
-function __guard__(value, transform) {
-  return typeof value !== 'undefined' && value !== null
-    ? transform(value)
-    : undefined
+function _makeRequest(options, projectId, metricsKey, callback) {
+  const timer = new metrics.Timer(metricsKey)
+  request(
+    {
+      url: `${settings.apis.documentupdater.url}${options.path}`,
+      json: options.json,
+      method: options.method || 'GET'
+    },
+    function(error, res, body) {
+      timer.done()
+      if (error) {
+        logger.warn(
+          { error, projectId },
+          'error making request to document updater'
+        )
+        callback(error)
+      } else if (res.statusCode >= 200 && res.statusCode < 300) {
+        callback(null, body)
+      } else {
+        error = new Error(
+          `document updater returned a failure status code: ${res.statusCode}`
+        )
+        logger.warn(
+          { error, projectId },
+          `document updater returned failure status code: ${res.statusCode}`
+        )
+        callback(error)
+      }
+    }
+  )
+}
+
+function _getUpdates(entityType, oldEntities, newEntities) {
+  if (!oldEntities) {
+    oldEntities = []
+  }
+  if (!newEntities) {
+    newEntities = []
+  }
+  const deletes = []
+  const adds = []
+  const renames = []
+
+  const oldEntitiesHash = _.indexBy(oldEntities, entity =>
+    entity[entityType]._id.toString()
+  )
+  const newEntitiesHash = _.indexBy(newEntities, entity =>
+    entity[entityType]._id.toString()
+  )
+
+  // Send deletes before adds (and renames) to keep a 1:1 mapping between
+  // paths and ids
+  //
+  // When a file is replaced, we first delete the old file and then add the
+  // new file. If the 'add' operation is sent to project history before the
+  // 'delete' then we would have two files with the same path at that point
+  // in time.
+  for (const id in oldEntitiesHash) {
+    const oldEntity = oldEntitiesHash[id]
+    const newEntity = newEntitiesHash[id]
+
+    if (newEntity == null) {
+      // entity deleted
+      deletes.push({
+        type: `rename-${entityType}`,
+        id,
+        pathname: oldEntity.path,
+        newPathname: ''
+      })
+    }
+  }
+
+  for (const id in newEntitiesHash) {
+    const newEntity = newEntitiesHash[id]
+    const oldEntity = oldEntitiesHash[id]
+
+    if (oldEntity == null) {
+      // entity added
+      adds.push({
+        type: `add-${entityType}`,
+        id,
+        pathname: newEntity.path,
+        docLines: newEntity.docLines,
+        url: newEntity.url,
+        hash: newEntity.file != null ? newEntity.file.hash : undefined
+      })
+    } else if (newEntity.path !== oldEntity.path) {
+      // entity renamed
+      renames.push({
+        type: `rename-${entityType}`,
+        id,
+        pathname: oldEntity.path,
+        newPathname: newEntity.path
+      })
+    }
+  }
+
+  return { deletes, adds, renames }
 }
diff --git a/services/web/app/src/Features/Project/ProjectEntityUpdateHandler.js b/services/web/app/src/Features/Project/ProjectEntityUpdateHandler.js
index 1a5d611ec1..3c9882b56c 100644
--- a/services/web/app/src/Features/Project/ProjectEntityUpdateHandler.js
+++ b/services/web/app/src/Features/Project/ProjectEntityUpdateHandler.js
@@ -607,7 +607,7 @@ const ProjectEntityUpdateHandler = {
     }
     ProjectLocator.findElement(
       { project_id: projectId, element_id: folderId, type: 'folder' },
-      (error, folder, path) => {
+      (error, folder, folderPath) => {
         if (error != null) {
           return callback(error)
         }
@@ -620,6 +620,7 @@ const ProjectEntityUpdateHandler = {
         )
         if (existingFile) {
           const doc = new Doc({ name: docName })
+          const filePath = `${folderPath.fileSystem}/${existingFile.name}`
           DocstoreManager.updateDoc(
             projectId.toString(),
             doc._id.toString(),
@@ -642,7 +643,7 @@ const ProjectEntityUpdateHandler = {
                     {
                       project_id: projectId,
                       doc_id: doc._id,
-                      path: path.fileSystem,
+                      path: filePath,
                       project_name: project.name,
                       rev: existingFile.rev + 1
                     },
@@ -650,7 +651,6 @@ const ProjectEntityUpdateHandler = {
                       if (err) {
                         return callback(err)
                       }
-                      const docPath = path.fileSystem
                       const projectHistoryId =
                         project.overleaf &&
                         project.overleaf.history &&
@@ -658,14 +658,14 @@ const ProjectEntityUpdateHandler = {
                       const newDocs = [
                         {
                           doc,
-                          path: docPath,
+                          path: filePath,
                           docLines: docLines.join('\n')
                         }
                       ]
                       const oldFiles = [
                         {
                           file: existingFile,
-                          path: Path.join(path.fileSystem, existingFile.name)
+                          path: filePath
                         }
                       ]
                       DocumentUpdaterHandler.updateProjectStructure(
diff --git a/services/web/test/acceptance/src/ProjectStructureTests.js b/services/web/test/acceptance/src/ProjectStructureTests.js
index 7dfe84ce69..937575c1bb 100644
--- a/services/web/test/acceptance/src/ProjectStructureTests.js
+++ b/services/web/test/acceptance/src/ProjectStructureTests.js
@@ -267,33 +267,24 @@ describe('ProjectStructureChanges', function() {
       })
     })
 
-    it('should version creating a doc', function() {
-      const {
-        docUpdates: updates,
-        version
-      } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
-      expect(updates.length).to.equal(2)
-      _.each(updates, update => {
+    it('should version creating a doc and a file', function() {
+      const { updates, version } = MockDocUpdaterApi.getProjectStructureUpdates(
+        exampleProjectId
+      )
+      expect(updates.length).to.equal(3)
+      for (const update of updates.slice(0, 2)) {
+        expect(update.type).to.equal('add-doc')
         expect(update.userId).to.equal(owner._id)
         expect(update.docLines).to.be.a('string')
-      })
+      }
       expect(_.where(updates, { pathname: '/main.tex' }).length).to.equal(1)
       expect(_.where(updates, { pathname: '/references.bib' }).length).to.equal(
         1
       )
-      expect(version).to.equal(3)
-    })
-
-    it('should version creating a file', function() {
-      const {
-        fileUpdates: updates,
-        version
-      } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
-      expect(updates.length).to.equal(1)
-      const update = updates[0]
-      expect(update.userId).to.equal(owner._id)
-      expect(update.pathname).to.equal('/universe.jpg')
-      expect(update.url).to.be.a('string')
+      expect(updates[2].type).to.equal('add-file')
+      expect(updates[2].userId).to.equal(owner._id)
+      expect(updates[2].pathname).to.equal('/universe.jpg')
+      expect(updates[2].url).to.be.a('string')
       expect(version).to.equal(3)
     })
   })
@@ -328,33 +319,24 @@ describe('ProjectStructureChanges', function() {
       })
     })
 
-    it('should version the docs created', function() {
-      const {
-        docUpdates: updates,
-        version
-      } = MockDocUpdaterApi.getProjectStructureUpdates(dupProjectId)
-      expect(updates.length).to.equal(2)
-      _.each(updates, update => {
+    it('should version the docs and files created', function() {
+      const { updates, version } = MockDocUpdaterApi.getProjectStructureUpdates(
+        dupProjectId
+      )
+      expect(updates.length).to.equal(3)
+      for (const update of updates.slice(0, 2)) {
+        expect(update.type).to.equal('add-doc')
         expect(update.userId).to.equal(owner._id)
         expect(update.docLines).to.be.a('string')
-      })
+      }
       expect(_.where(updates, { pathname: '/main.tex' }).length).to.equal(1)
       expect(_.where(updates, { pathname: '/references.bib' }).length).to.equal(
         1
       )
-      expect(version).to.equal(1)
-    })
-
-    it('should version the files created', function() {
-      const {
-        fileUpdates: updates,
-        version
-      } = MockDocUpdaterApi.getProjectStructureUpdates(dupProjectId)
-      expect(updates.length).to.equal(1)
-      const update = updates[0]
-      expect(update.userId).to.equal(owner._id)
-      expect(update.pathname).to.equal('/universe.jpg')
-      expect(update.url).to.be.a('string')
+      expect(updates[2].type).to.equal('add-file')
+      expect(updates[2].userId).to.equal(owner._id)
+      expect(updates[2].pathname).to.equal('/universe.jpg')
+      expect(updates[2].url).to.be.a('string')
       expect(version).to.equal(1)
     })
   })
@@ -382,11 +364,12 @@ describe('ProjectStructureChanges', function() {
 
     it('should version the doc added', function(done) {
       const {
-        docUpdates: updates,
+        updates,
         version: newVersion
       } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
       expect(updates.length).to.equal(1)
       const update = updates[0]
+      expect(update.type).to.equal('add-doc')
       expect(update.userId).to.equal(owner._id)
       expect(update.pathname).to.equal('/new.tex')
       expect(update.docLines).to.be.a('string')
@@ -414,29 +397,19 @@ describe('ProjectStructureChanges', function() {
       })
     })
 
-    it('should version the docs created', function() {
-      const {
-        docUpdates: updates,
-        version
-      } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
-      expect(updates.length).to.equal(1)
-      const update = updates[0]
-      expect(update.userId).to.equal(owner._id)
-      expect(update.pathname).to.equal('/main.tex')
-      expect(update.docLines).to.equal('Test')
-      expect(version).to.equal(1)
-    })
-
-    it('should version the files created', function() {
-      const {
-        fileUpdates: updates,
-        version
-      } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
-      expect(updates.length).to.equal(1)
-      const update = updates[0]
-      expect(update.userId).to.equal(owner._id)
-      expect(update.pathname).to.equal('/1pixel.png')
-      expect(update.url).to.be.a('string')
+    it('should version the docs and files created', function() {
+      const { updates, version } = MockDocUpdaterApi.getProjectStructureUpdates(
+        exampleProjectId
+      )
+      expect(updates.length).to.equal(2)
+      expect(updates[0].type).to.equal('add-doc')
+      expect(updates[0].userId).to.equal(owner._id)
+      expect(updates[0].pathname).to.equal('/main.tex')
+      expect(updates[0].docLines).to.equal('Test')
+      expect(updates[1].type).to.equal('add-file')
+      expect(updates[1].userId).to.equal(owner._id)
+      expect(updates[1].pathname).to.equal('/1pixel.png')
+      expect(updates[1].url).to.be.a('string')
       expect(version).to.equal(1)
     })
   })
@@ -597,22 +570,22 @@ describe('ProjectStructureChanges', function() {
   })
 
   describe('uploading a project with files in different encodings', function() {
-    let docUpdates
+    let updates
     beforeEach(function(done) {
       uploadExampleProject(owner, 'charsets/charsets.zip', (err, projectId) => {
         if (err) {
           return done(err)
         }
 
-        docUpdates = MockDocUpdaterApi.getProjectStructureUpdates(projectId)
-          .docUpdates
+        updates = MockDocUpdaterApi.getProjectStructureUpdates(projectId)
+          .updates
         done()
       })
     })
 
     it('should correctly parse windows-1252', function() {
       const update = _.find(
-        docUpdates,
+        updates,
         update => update.pathname === '/test-german-windows-1252.tex'
       )
       expect(update.docLines).to.contain(
@@ -622,7 +595,7 @@ describe('ProjectStructureChanges', function() {
 
     it('should correctly parse German utf8', function() {
       const update = _.find(
-        docUpdates,
+        updates,
         update => update.pathname === '/test-german-utf8x.tex'
       )
       expect(update.docLines).to.contain(
@@ -632,7 +605,7 @@ describe('ProjectStructureChanges', function() {
 
     it('should correctly parse little-endian utf16', function() {
       const update = _.find(
-        docUpdates,
+        updates,
         update => update.pathname === '/test-greek-utf16-le-bom.tex'
       )
       expect(update.docLines).to.contain(
@@ -642,7 +615,7 @@ describe('ProjectStructureChanges', function() {
 
     it('should correctly parse Greek utf8', function() {
       const update = _.find(
-        docUpdates,
+        updates,
         update => update.pathname === '/test-greek-utf8x.tex'
       )
       expect(update.docLines).to.contain(
@@ -675,12 +648,12 @@ describe('ProjectStructureChanges', function() {
     })
 
     it('should version a newly uploaded file', function(done) {
-      const {
-        fileUpdates: updates,
-        version
-      } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
+      const { updates, version } = MockDocUpdaterApi.getProjectStructureUpdates(
+        exampleProjectId
+      )
       expect(updates.length).to.equal(1)
       const update = updates[0]
+      expect(update.type).to.equal('add-file')
       expect(update.userId).to.equal(owner._id)
       expect(update.pathname).to.equal('/1pixel.png')
       expect(update.url).to.be.a('string')
@@ -701,17 +674,18 @@ describe('ProjectStructureChanges', function() {
         'image/png',
         () => {
           const {
-            fileUpdates: updates,
+            updates,
             version
           } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
           expect(updates.length).to.equal(2)
-          let update = updates[0]
-          expect(update.userId).to.equal(owner._id)
-          expect(update.pathname).to.equal('/1pixel.png')
-          update = updates[1]
-          expect(update.userId).to.equal(owner._id)
-          expect(update.pathname).to.equal('/1pixel.png')
-          expect(update.url).to.be.a('string')
+          expect(updates[0].type).to.equal('rename-file')
+          expect(updates[0].userId).to.equal(owner._id)
+          expect(updates[0].pathname).to.equal('/1pixel.png')
+          expect(updates[0].newPathname).to.equal('')
+          expect(updates[1].type).to.equal('add-file')
+          expect(updates[1].userId).to.equal(owner._id)
+          expect(updates[1].pathname).to.equal('/1pixel.png')
+          expect(updates[1].url).to.be.a('string')
 
           // two file uploads
           verifyVersionIncremented(
@@ -778,11 +752,12 @@ describe('ProjectStructureChanges', function() {
         exampleFolderId,
         () => {
           const {
-            docUpdates: updates,
+            updates,
             version
           } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
           expect(updates.length).to.equal(1)
           const update = updates[0]
+          expect(update.type).to.equal('rename-doc')
           expect(update.userId).to.equal(owner._id)
           expect(update.pathname).to.equal('/new.tex')
           expect(update.newPathname).to.equal('/foo/new.tex')
@@ -808,11 +783,12 @@ describe('ProjectStructureChanges', function() {
         exampleFolderId,
         () => {
           const {
-            fileUpdates: updates,
+            updates,
             version
           } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
           expect(updates.length).to.equal(1)
           const update = updates[0]
+          expect(update.type).to.equal('rename-file')
           expect(update.userId).to.equal(owner._id)
           expect(update.pathname).to.equal('/1pixel.png')
           expect(update.newPathname).to.equal('/foo/1pixel.png')
@@ -860,13 +836,14 @@ describe('ProjectStructureChanges', function() {
                 newFolderId,
                 () => {
                   const {
-                    docUpdates: updates,
+                    updates,
                     version
                   } = MockDocUpdaterApi.getProjectStructureUpdates(
                     exampleProjectId
                   )
                   expect(updates.length).to.equal(1)
                   let update = updates[0]
+                  expect(update.type).to.equal('rename-doc')
                   expect(update.userId).to.equal(owner._id)
                   expect(update.pathname).to.equal('/foo/new.tex')
                   expect(update.newPathname).to.equal('/bar/foo/new.tex')
@@ -946,11 +923,12 @@ describe('ProjectStructureChanges', function() {
         'wombat.tex',
         () => {
           const {
-            docUpdates: updates,
+            updates,
             version
           } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
           expect(updates.length).to.equal(1)
           const update = updates[0]
+          expect(update.type).to.equal('rename-doc')
           expect(update.userId).to.equal(owner._id)
           expect(update.pathname).to.equal('/foo/new.tex')
           expect(update.newPathname).to.equal('/foo/wombat.tex')
@@ -975,11 +953,12 @@ describe('ProjectStructureChanges', function() {
         'potato.png',
         () => {
           const {
-            fileUpdates: updates,
+            updates,
             version
           } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
           expect(updates.length).to.equal(1)
           const update = updates[0]
+          expect(update.type).to.equal('rename-file')
           expect(update.userId).to.equal(owner._id)
           expect(update.pathname).to.equal('/foo/1pixel.png')
           expect(update.newPathname).to.equal('/foo/potato.png')
@@ -1004,21 +983,18 @@ describe('ProjectStructureChanges', function() {
         'giraffe',
         () => {
           const {
-            docUpdates,
-            fileUpdates,
+            updates,
             version
           } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
-          expect(docUpdates.length).to.equal(1)
-          const docUpdate = docUpdates[0]
-          expect(docUpdate.userId).to.equal(owner._id)
-          expect(docUpdate.pathname).to.equal('/foo/new.tex')
-          expect(docUpdate.newPathname).to.equal('/giraffe/new.tex')
-
-          expect(fileUpdates.length).to.equal(1)
-          const fileUpdate = fileUpdates[0]
-          expect(fileUpdate.userId).to.equal(owner._id)
-          expect(fileUpdate.pathname).to.equal('/foo/1pixel.png')
-          expect(fileUpdate.newPathname).to.equal('/giraffe/1pixel.png')
+          expect(updates.length).to.equal(2)
+          expect(updates[0].type).to.equal('rename-doc')
+          expect(updates[0].userId).to.equal(owner._id)
+          expect(updates[0].pathname).to.equal('/foo/new.tex')
+          expect(updates[0].newPathname).to.equal('/giraffe/new.tex')
+          expect(updates[1].type).to.equal('rename-file')
+          expect(updates[1].userId).to.equal(owner._id)
+          expect(updates[1].pathname).to.equal('/foo/1pixel.png')
+          expect(updates[1].newPathname).to.equal('/giraffe/1pixel.png')
 
           verifyVersionIncremented(
             exampleProjectId,
@@ -1078,21 +1054,18 @@ describe('ProjectStructureChanges', function() {
     it('should version deleting a folder', function(done) {
       deleteItem(owner, exampleProjectId, 'folder', exampleFolderId, () => {
         const {
-          docUpdates,
-          fileUpdates,
+          updates,
           version
         } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
-        expect(docUpdates.length).to.equal(1)
-        const docUpdate = docUpdates[0]
-        expect(docUpdate.userId).to.equal(owner._id)
-        expect(docUpdate.pathname).to.equal('/foo/new.tex')
-        expect(docUpdate.newPathname).to.equal('')
-
-        expect(fileUpdates.length).to.equal(1)
-        const fileUpdate = fileUpdates[0]
-        expect(fileUpdate.userId).to.equal(owner._id)
-        expect(fileUpdate.pathname).to.equal('/foo/1pixel.png')
-        expect(fileUpdate.newPathname).to.equal('')
+        expect(updates.length).to.equal(2)
+        expect(updates[0].type).to.equal('rename-doc')
+        expect(updates[0].userId).to.equal(owner._id)
+        expect(updates[0].pathname).to.equal('/foo/new.tex')
+        expect(updates[0].newPathname).to.equal('')
+        expect(updates[1].type).to.equal('rename-file')
+        expect(updates[1].userId).to.equal(owner._id)
+        expect(updates[1].pathname).to.equal('/foo/1pixel.png')
+        expect(updates[1].newPathname).to.equal('')
 
         verifyVersionIncremented(exampleProjectId, oldVersion, version, 1, done)
       })
@@ -1250,11 +1223,12 @@ describe('ProjectStructureChanges', function() {
         }
 
         const {
-          docUpdates: updates,
+          updates,
           version
         } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
         expect(updates.length).to.equal(1)
         const update = updates[0]
+        expect(update.type).to.equal('add-doc')
         expect(update.userId).to.equal(owner._id)
         expect(update.pathname).to.equal('/test.tex')
         expect(update.docLines).to.equal('Test')
@@ -1293,11 +1267,12 @@ describe('ProjectStructureChanges', function() {
         }
 
         const {
-          fileUpdates: updates,
+          updates,
           version
         } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
         expect(updates.length).to.equal(1)
         const update = updates[0]
+        expect(update.type).to.equal('add-file')
         expect(update.userId).to.equal(owner._id)
         expect(update.pathname).to.equal('/1pixel.png')
         expect(update.url).to.be.a('string')
@@ -1352,18 +1327,18 @@ describe('ProjectStructureChanges', function() {
           }
 
           const {
-            fileUpdates: updates,
+            updates,
             version
           } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
           expect(updates.length).to.equal(2)
-          let update = updates[0]
-          expect(update.userId).to.equal(owner._id)
-          expect(update.pathname).to.equal('/1pixel.png')
-          // expect(update.url).to.be.a('string');
-          update = updates[1]
-          expect(update.userId).to.equal(owner._id)
-          expect(update.pathname).to.equal('/1pixel.png')
-          expect(update.url).to.be.a('string')
+          expect(updates[0].type).to.equal('rename-file')
+          expect(updates[0].userId).to.equal(owner._id)
+          expect(updates[0].pathname).to.equal('/1pixel.png')
+          expect(updates[0].newPathname).to.equal('')
+          expect(updates[1].type).to.equal('add-file')
+          expect(updates[1].userId).to.equal(owner._id)
+          expect(updates[1].pathname).to.equal('/1pixel.png')
+          expect(updates[1].url).to.be.a('string')
 
           verifyVersionIncremented(
             exampleProjectId,
@@ -1396,11 +1371,12 @@ describe('ProjectStructureChanges', function() {
             }
 
             const {
-              docUpdates: updates,
+              updates,
               version
             } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
             expect(updates.length).to.equal(1)
             const update = updates[0]
+            expect(update.type).to.equal('rename-doc')
             expect(update.userId).to.equal(owner._id)
             expect(update.pathname).to.equal('/new.tex')
             expect(update.newPathname).to.equal('')
@@ -1442,11 +1418,12 @@ describe('ProjectStructureChanges', function() {
           'test-greek-utf16-le-bom.tex',
           'text/x-tex',
           () => {
-            const {
-              docUpdates: updates
-            } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
+            const { updates } = MockDocUpdaterApi.getProjectStructureUpdates(
+              exampleProjectId
+            )
             expect(updates.length).to.equal(1)
             const update = updates[0]
+            expect(update.type).to.equal('add-doc')
             expect(update.pathname).to.equal('/test-greek-utf16-le-bom.tex')
             expect(update.docLines).to.contain(
               'Η γρήγορη καστανή αλεπού πήδηξε χαλαρά πάνω από το σκυλί.'
@@ -1465,11 +1442,12 @@ describe('ProjectStructureChanges', function() {
           'test-german-windows-1252.tex',
           'text/x-tex',
           () => {
-            const {
-              docUpdates: updates
-            } = MockDocUpdaterApi.getProjectStructureUpdates(exampleProjectId)
+            const { updates } = MockDocUpdaterApi.getProjectStructureUpdates(
+              exampleProjectId
+            )
             expect(updates.length).to.equal(1)
             const update = updates[0]
+            expect(update.type).to.equal('add-doc')
             expect(update.pathname).to.equal('/test-german-windows-1252.tex')
             expect(update.docLines).to.contain(
               'Der schnelle braune Fuchs sprang träge über den Hund.'
diff --git a/services/web/test/acceptance/src/helpers/MockDocUpdaterApi.js b/services/web/test/acceptance/src/helpers/MockDocUpdaterApi.js
index 728a955e22..5f552d330e 100644
--- a/services/web/test/acceptance/src/helpers/MockDocUpdaterApi.js
+++ b/services/web/test/acceptance/src/helpers/MockDocUpdaterApi.js
@@ -1,108 +1,76 @@
-/* eslint-disable
-    camelcase,
-    max-len,
-    no-return-assign,
-*/
-// TODO: This file was created by bulk-decaffeinate.
-// Fix any style issues and re-enable lint.
-/*
- * decaffeinate suggestions:
- * DS101: Remove unnecessary use of Array.from
- * DS102: Remove unnecessary code created because of implicit returns
- * DS207: Consider shorter variations of null checks
- * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
- */
-let MockDocUpdaterApi
 const express = require('express')
 const app = express()
 const bodyParser = require('body-parser')
 const jsonParser = bodyParser.json()
 
-module.exports = MockDocUpdaterApi = {
+const MockDocUpdaterApi = {
   updates: {},
 
   clearProjectStructureUpdates() {
-    return (this.updates = {})
+    this.updates = {}
   },
 
-  getProjectStructureUpdates(project_id) {
-    return this.updates[project_id] || { docUpdates: [], fileUpdates: [] }
+  getProjectStructureUpdates(projectId) {
+    return this.updates[projectId] || { updates: [] }
   },
 
-  addProjectStructureUpdates(
-    project_id,
-    userId,
-    docUpdates,
-    fileUpdates,
-    version
-  ) {
-    let update
-    if (!this.updates[project_id]) {
-      this.updates[project_id] = { docUpdates: [], fileUpdates: [] }
+  addProjectStructureUpdates(projectId, userId, updates, version) {
+    if (!this.updates[projectId]) {
+      this.updates[projectId] = { updates: [] }
     }
 
-    for (update of Array.from(docUpdates)) {
+    for (const update of updates) {
       update.userId = userId
-      this.updates[project_id].docUpdates.push(update)
+      this.updates[projectId].updates.push(update)
     }
 
-    for (update of Array.from(fileUpdates)) {
-      update.userId = userId
-      this.updates[project_id].fileUpdates.push(update)
-    }
-
-    return (this.updates[project_id].version = version)
+    this.updates[projectId].version = version
   },
 
   run() {
-    app.post('/project/:project_id/flush', (req, res, next) => {
-      return res.sendStatus(204)
+    app.post('/project/:projectId/flush', (req, res, next) => {
+      res.sendStatus(204)
     })
 
-    app.post('/project/:project_id', jsonParser, (req, res, next) => {
-      const { project_id } = req.params
-      const { userId, docUpdates, fileUpdates, version } = req.body
-      this.addProjectStructureUpdates(
-        project_id,
-        userId,
-        docUpdates,
-        fileUpdates,
-        version
-      )
-      return res.sendStatus(200)
+    app.post('/project/:projectId', jsonParser, (req, res, next) => {
+      const { projectId } = req.params
+      const { userId, updates, version } = req.body
+      this.addProjectStructureUpdates(projectId, userId, updates, version)
+      res.sendStatus(200)
     })
 
-    app.post('/project/:project_id/doc/:doc_id', (req, res, next) => {
-      return res.sendStatus(204)
+    app.post('/project/:projectId/doc/:doc_id', (req, res, next) => {
+      res.sendStatus(204)
     })
 
-    app.delete('/project/:project_id', (req, res) => {
-      return res.sendStatus(204)
+    app.delete('/project/:projectId', (req, res) => {
+      res.sendStatus(204)
     })
 
-    app.post('/project/:project_id/doc/:doc_id/flush', (req, res, next) => {
-      return res.sendStatus(204)
+    app.post('/project/:projectId/doc/:doc_id/flush', (req, res, next) => {
+      res.sendStatus(204)
     })
 
-    app.delete('/project/:project_id/doc/:doc_id', (req, res, next) => {
-      return res.sendStatus(204)
+    app.delete('/project/:projectId/doc/:doc_id', (req, res, next) => {
+      res.sendStatus(204)
     })
 
-    app.post('/project/:project_id/history/resync', (req, res, next) => {
-      return res.sendStatus(204)
+    app.post('/project/:projectId/history/resync', (req, res, next) => {
+      res.sendStatus(204)
     })
 
-    return app
+    app
       .listen(3003, error => {
-        if (error != null) {
+        if (error) {
           throw error
         }
       })
       .on('error', error => {
         console.error('error starting MockDocUpdaterApi:', error.message)
-        return process.exit(1)
+        process.exit(1)
       })
   }
 }
 
 MockDocUpdaterApi.run()
+module.exports = MockDocUpdaterApi
diff --git a/services/web/test/unit/src/DocumentUpdater/DocumentUpdaterHandlerTests.js b/services/web/test/unit/src/DocumentUpdater/DocumentUpdaterHandlerTests.js
index 97a1a0b6dd..7853ad89a0 100644
--- a/services/web/test/unit/src/DocumentUpdater/DocumentUpdaterHandlerTests.js
+++ b/services/web/test/unit/src/DocumentUpdater/DocumentUpdaterHandlerTests.js
@@ -882,8 +882,9 @@ describe('DocumentUpdaterHandler', function() {
             newProject: { version: this.version }
           }
 
-          const docUpdates = [
+          const updates = [
             {
+              type: 'rename-doc',
               id: this.docIdB.toString(),
               pathname: '/old_b',
               newPathname: '/new_b'
@@ -901,8 +902,7 @@ describe('DocumentUpdaterHandler', function() {
                   url: this.url,
                   method: 'POST',
                   json: {
-                    docUpdates,
-                    fileUpdates: [],
+                    updates,
                     userId: this.user_id,
                     version: this.version,
                     projectHistoryId: this.projectHistoryId
@@ -925,8 +925,9 @@ describe('DocumentUpdaterHandler', function() {
             newProject: { version: this.version }
           }
 
-          const docUpdates = [
+          const updates = [
             {
+              type: 'add-doc',
               id: this.docId.toString(),
               pathname: '/foo',
               docLines: 'a\nb',
@@ -946,8 +947,7 @@ describe('DocumentUpdaterHandler', function() {
                   url: this.url,
                   method: 'POST',
                   json: {
-                    docUpdates,
-                    fileUpdates: [],
+                    updates,
                     userId: this.user_id,
                     version: this.version,
                     projectHistoryId: this.projectHistoryId
@@ -974,8 +974,9 @@ describe('DocumentUpdaterHandler', function() {
             newProject: { version: this.version }
           }
 
-          const fileUpdates = [
+          const updates = [
             {
+              type: 'add-file',
               id: this.fileId.toString(),
               pathname: '/bar',
               url: 'filestore.example.com/file',
@@ -995,8 +996,7 @@ describe('DocumentUpdaterHandler', function() {
                   url: this.url,
                   method: 'POST',
                   json: {
-                    docUpdates: [],
-                    fileUpdates,
+                    updates,
                     userId: this.user_id,
                     version: this.version,
                     projectHistoryId: this.projectHistoryId
@@ -1019,8 +1019,9 @@ describe('DocumentUpdaterHandler', function() {
             newProject: { version: this.version }
           }
 
-          const docUpdates = [
+          const updates = [
             {
+              type: 'rename-doc',
               id: this.docId.toString(),
               pathname: '/foo',
               newPathname: ''
@@ -1038,8 +1039,7 @@ describe('DocumentUpdaterHandler', function() {
                   url: this.url,
                   method: 'POST',
                   json: {
-                    docUpdates,
-                    fileUpdates: [],
+                    updates,
                     userId: this.user_id,
                     version: this.version,
                     projectHistoryId: this.projectHistoryId
@@ -1052,6 +1052,67 @@ describe('DocumentUpdaterHandler', function() {
         })
       })
 
+      describe('when a file is converted to a doc', function() {
+        it('should send the delete first', function(done) {
+          this.docId = new ObjectId()
+          this.fileId = new ObjectId()
+          this.changes = {
+            oldFiles: [
+              {
+                path: '/foo.doc',
+                url: 'filestore.example.com/file',
+                file: { _id: this.fileId }
+              }
+            ],
+            newDocs: [
+              {
+                path: '/foo.doc',
+                docLines: 'hello there',
+                doc: { _id: this.docId }
+              }
+            ],
+            newProject: { version: this.version }
+          }
+
+          const updates = [
+            {
+              type: 'rename-file',
+              id: this.fileId.toString(),
+              pathname: '/foo.doc',
+              newPathname: ''
+            },
+            {
+              type: 'add-doc',
+              id: this.docId.toString(),
+              pathname: '/foo.doc',
+              docLines: 'hello there',
+              url: undefined,
+              hash: undefined
+            }
+          ]
+
+          this.handler.updateProjectStructure(
+            this.project_id,
+            this.projectHistoryId,
+            this.user_id,
+            this.changes,
+            () => {
+              this.request.should.have.been.calledWith({
+                url: this.url,
+                method: 'POST',
+                json: {
+                  updates,
+                  userId: this.user_id,
+                  version: this.version,
+                  projectHistoryId: this.projectHistoryId
+                }
+              })
+              done()
+            }
+          )
+        })
+      })
+
       describe('when the project version is missing', function() {
         it('should call the callback with an error', function() {
           this.docId = new ObjectId()
diff --git a/services/web/test/unit/src/Project/ProjectEntityUpdateHandlerTests.js b/services/web/test/unit/src/Project/ProjectEntityUpdateHandlerTests.js
index 5c7ec60232..42d69c44de 100644
--- a/services/web/test/unit/src/Project/ProjectEntityUpdateHandlerTests.js
+++ b/services/web/test/unit/src/Project/ProjectEntityUpdateHandlerTests.js
@@ -880,10 +880,17 @@ describe('ProjectEntityUpdateHandler', function() {
         this.folder = { _id: folderId, docs: [], fileRefs: [this.existingFile] }
         this.newDoc = { _id: docId }
         this.docLines = ['line one', 'line two']
-        this.path = 'path/to/file'
-        this.ProjectLocator.findElement.yields(null, this.folder, {
-          fileSystem: this.path
-        })
+        this.folderPath = '/path/to/folder'
+        this.filePath = '/path/to/folder/foo.tex'
+        this.ProjectLocator.findElement
+          .withArgs({
+            project_id: projectId,
+            element_id: this.folder._id,
+            type: 'folder'
+          })
+          .yields(null, this.folder, {
+            fileSystem: this.folderPath
+          })
         this.DocstoreManager.updateDoc.yields()
         this.ProjectEntityMongoUpdateHandler.replaceFileWithDoc.yields(
           null,
@@ -924,7 +931,7 @@ describe('ProjectEntityUpdateHandler', function() {
         expect(this.TpdsUpdateSender.addDoc).to.have.been.calledWith({
           project_id: projectId,
           doc_id: this.newDoc._id,
-          path: this.path,
+          path: this.filePath,
           project_name: this.newProject.name,
           rev: this.existingFile.rev + 1
         })
@@ -934,13 +941,13 @@ describe('ProjectEntityUpdateHandler', function() {
         const oldFiles = [
           {
             file: this.existingFile,
-            path: `${this.path}/foo.tex`
+            path: this.filePath
           }
         ]
         const newDocs = [
           {
             doc: sinon.match(this.newDoc),
-            path: this.path,
+            path: this.filePath,
             docLines: this.docLines.join('\n')
           }
         ]