diff --git a/source/java/org/alfresco/repo/avm/AVMServiceLocalTest.java b/source/java/org/alfresco/repo/avm/AVMServiceLocalTest.java
index ae0ed053f3..cd79c6091a 100644
--- a/source/java/org/alfresco/repo/avm/AVMServiceLocalTest.java
+++ b/source/java/org/alfresco/repo/avm/AVMServiceLocalTest.java
@@ -2982,6 +2982,14 @@ public class AVMServiceLocalTest extends TestCase
             diffs = fSyncService.compare(-1, "mainB--layer:/a", -1, "mainB:/a", null);
             assertEquals("[mainB--layer:/a/foo[-1] > mainB:/a/foo[-1]]", diffs.toString());
             
+            /*
+            // For testing ALF-4800 (testLayeredFileDelete1 / testLayeredFileDelete2 - error in dispatchUpdate)
+            // In addition to sleep below, increase frequency of OrphanReaper (eg. set startDelay/repeatInterval to 2000/500 msecs)
+            logger.debug("start sleep");
+            Thread.sleep(30000);
+            logger.debug("finish sleep");
+            */
+            
             // ETHREEOH-2844
             fSyncService.update(diffs, null, false, false, false, false, "one", "one");
             fSyncService.flatten("mainB--layer:/a", "mainB:/a");
@@ -3105,6 +3113,14 @@ public class AVMServiceLocalTest extends TestCase
             diffs = fSyncService.compare(-1, "mainB--layer:/a", -1, "mainB:/a", null);
             assertEquals("[mainB--layer:/a/foo[-1] > mainB:/a/foo[-1]]", diffs.toString());
             
+            /*
+            // For testing ALF-4800 (testLayeredFileDelete1 / testLayeredFileDelete2 - error in dispatchUpdate)
+            // In addition to sleep below, increase frequency of OrphanReaper (eg. set startDelay/repeatInterval to 2000/500 msecs)
+            logger.debug("start sleep");
+            Thread.sleep(30000);
+            logger.debug("finish sleep");
+            */
+            
             // ETHREEOH-2829
             fSyncService.update(diffs, null, false, false, false, false, "one", "one");
             fSyncService.flatten("mainB--layer:/a", "mainB:/a");
diff --git a/source/java/org/alfresco/repo/avm/AVMSyncServiceImpl.java b/source/java/org/alfresco/repo/avm/AVMSyncServiceImpl.java
index 6597dc9b06..2417a7bf48 100644
--- a/source/java/org/alfresco/repo/avm/AVMSyncServiceImpl.java
+++ b/source/java/org/alfresco/repo/avm/AVMSyncServiceImpl.java
@@ -812,7 +812,8 @@ public class AVMSyncServiceImpl implements AVMSyncService
                 }
             }
             
-            if (srcDesc.isDeleted() && (srcDesc.getDeletedType() == AVMNodeType.LAYERED_DIRECTORY))
+            if (srcDesc.isDeleted() && 
+                ((srcDesc.getDeletedType() == AVMNodeType.LAYERED_DIRECTORY) || (srcDesc.getDeletedType() == AVMNodeType.LAYERED_FILE)))
             {
                 Integer diff = compareLayeredCommonAncestor(common, srcDesc, dstDesc);
                 if (diff != null)
@@ -820,7 +821,8 @@ public class AVMSyncServiceImpl implements AVMSyncService
                     return diff;
                 }
             }
-            else if (dstDesc.isDeleted() && (dstDesc.getDeletedType() == AVMNodeType.LAYERED_DIRECTORY))
+            else if (dstDesc.isDeleted() && 
+                     ((dstDesc.getDeletedType() == AVMNodeType.LAYERED_DIRECTORY) || (dstDesc.getDeletedType() == AVMNodeType.LAYERED_FILE)))
             {
                 Integer diff = compareLayeredCommonAncestor(common, dstDesc, srcDesc);
                 if (diff != null)
@@ -1054,7 +1056,7 @@ public class AVMSyncServiceImpl implements AVMSyncService
             {
                 diff = diffType;
             }
-            else if (common.isLayeredFile())
+            else if (common.isLayeredFile() || (compareAncNode.getType() == AVMNodeType.LAYERED_FILE))
             {
                 // TODO review (alongside createSnapshot+COW)
                 diff = compareLayeredCommonAncestor(common, compareAncNode.getId(), diffType);