diff --git a/services/track-changes/test/acceptance/coffee/AppendingUpdatesTests.coffee b/services/track-changes/test/acceptance/coffee/AppendingUpdatesTests.coffee
index a82767e7c5..3d4bf14465 100644
--- a/services/track-changes/test/acceptance/coffee/AppendingUpdatesTests.coffee
+++ b/services/track-changes/test/acceptance/coffee/AppendingUpdatesTests.coffee
@@ -37,7 +37,7 @@ describe "Appending doc ops to the history", ->
 					done()
 
 		it "should insert the compressed op into mongo", ->
-			expect(@updates[0].op).to.deep.equal [{
+			expect(@updates[0].pack[0].op).to.deep.equal [{
 				p: 3, i: "foo"
 			}]
 
@@ -99,13 +99,13 @@ describe "Appending doc ops to the history", ->
 						throw error if error?
 						done()
 
-			it "should combine all the updates into one", ->
-				expect(@updates[0].op).to.deep.equal [{
-					p: 3, i: "foobar"
+			it "should combine all the updates into one pack", ->
+				expect(@updates[0].pack[1].op).to.deep.equal [{
+					p: 6, i: "bar"
 				}]
 
 			it "should insert the correct version number into mongo", ->
-				expect(@updates[0].v).to.equal 8
+				expect(@updates[0].v_end).to.equal 8
 
 
 		describe "when the updates are far apart", ->
@@ -129,11 +129,11 @@ describe "Appending doc ops to the history", ->
 						throw error if error?
 						done()
 
-			it "should keep the updates separate", ->
-				expect(@updates[0].op).to.deep.equal [{
+			it "should combine the updates into one pack", ->
+				expect(@updates[0].pack[0].op).to.deep.equal [{
 					p: 3, i: "foo"
 				}]
-				expect(@updates[1].op).to.deep.equal [{
+				expect(@updates[0].pack[1].op).to.deep.equal [{
 					p: 6, i: "bar"
 				}]
 
@@ -160,10 +160,10 @@ describe "Appending doc ops to the history", ->
 					done()
 
 		it "should concat the compressed op into mongo", ->
-			expect(@updates[0].op).to.deep.equal @expectedOp
+			expect(@updates[0].pack.length).to.deep.equal 3  # batch size is 100
 
 		it "should insert the correct version number into mongo", ->
-			expect(@updates[0].v).to.equal 250
+			expect(@updates[0].v_end).to.equal 250
 
 
 	describe "when there are multiple ops in each update", ->
@@ -188,16 +188,16 @@ describe "Appending doc ops to the history", ->
 					done()
 
 		it "should insert the compressed ops into mongo", ->
-			expect(@updates[0].op).to.deep.equal [{
+			expect(@updates[0].pack[0].op).to.deep.equal [{
 				p: 3, i: "foo"
 			}]
-			expect(@updates[1].op).to.deep.equal [{
+			expect(@updates[0].pack[1].op).to.deep.equal [{
 				p: 6, i: "bar"
 			}]
 
 		it "should insert the correct version numbers into mongo", ->
-			expect(@updates[0].v).to.equal 3
-			expect(@updates[1].v).to.equal 4
+			expect(@updates[0].pack[0].v).to.equal 3
+			expect(@updates[0].pack[1].v).to.equal 4
 
 	describe "when there is a no-op update", ->
 		before (done) ->
@@ -221,17 +221,17 @@ describe "Appending doc ops to the history", ->
 					done()
 
 		it "should insert the compressed no-op into mongo", ->
-			expect(@updates[0].op).to.deep.equal []
+			expect(@updates[0].pack[0].op).to.deep.equal []
 
 
 		it "should insert the compressed next update into mongo", ->
-			expect(@updates[1].op).to.deep.equal [{
+			expect(@updates[0].pack[1].op).to.deep.equal [{
 				p: 3, i: "foo"
 			}]
 
 		it "should insert the correct version numbers into mongo", ->
-			expect(@updates[0].v).to.equal 3
-			expect(@updates[1].v).to.equal 4
+			expect(@updates[0].pack[0].v).to.equal 3
+			expect(@updates[0].pack[1].v).to.equal 4
 
 	describe "when the project has versioning enabled", ->
 		before (done) ->
diff --git a/services/track-changes/test/acceptance/coffee/ArchivingUpdatesTests.coffee b/services/track-changes/test/acceptance/coffee/ArchivingUpdatesTests.coffee
index eb04a976ab..ab06b991b8 100644
--- a/services/track-changes/test/acceptance/coffee/ArchivingUpdatesTests.coffee
+++ b/services/track-changes/test/acceptance/coffee/ArchivingUpdatesTests.coffee
@@ -89,9 +89,10 @@ describe "Archiving updates", ->
 				doc.lastVersion.should.equal 20
 				done()
 
-		it "should store twenty doc changes in S3", (done) ->
+		it "should store twenty doc changes in S3 in one pack", (done) ->
 			TrackChangesClient.getS3Doc @project_id, @doc_id, (error, res, doc) =>
-				doc.length.should.equal 20
+				doc.length.should.equal 1
+				doc[0].pack.length.should.equal 20
 				done()
 
 	describe "unarchiving a doc's updates", ->
@@ -103,7 +104,7 @@ describe "Archiving updates", ->
 		it "should restore doc changes", (done) ->
 			db.docHistory.count { doc_id: ObjectId(@doc_id) }, (error, count) ->
 				throw error if error?
-				count.should.equal 20
+				count.should.equal 1
 				done()
 
 		it "should remove doc marked as inS3", (done) ->
diff --git a/services/track-changes/test/acceptance/coffee/FlushingUpdatesTests.coffee b/services/track-changes/test/acceptance/coffee/FlushingUpdatesTests.coffee
index 63ddca4da9..3f82304da1 100644
--- a/services/track-changes/test/acceptance/coffee/FlushingUpdatesTests.coffee
+++ b/services/track-changes/test/acceptance/coffee/FlushingUpdatesTests.coffee
@@ -31,7 +31,7 @@ describe "Flushing updates", ->
 
 		it "should flush the op into mongo", (done) ->
 			TrackChangesClient.getCompressedUpdates @doc_id, (error, updates) ->
-				expect(updates[0].op).to.deep.equal [{
+				expect(updates[0].pack[0].op).to.deep.equal [{
 					p: 3, i: "f"
 				}]
 				done()