diff --git a/java/testFramework/src/com/intellij/testFramework/PsiTestCase.java b/java/testFramework/src/com/intellij/testFramework/PsiTestCase.java
index 381631c604ff..4f8ecf5136e9 100644
--- a/java/testFramework/src/com/intellij/testFramework/PsiTestCase.java
+++ b/java/testFramework/src/com/intellij/testFramework/PsiTestCase.java
@@ -18,6 +18,7 @@ package com.intellij.testFramework;
 import com.intellij.openapi.application.Result;
 import com.intellij.openapi.application.WriteAction;
 import com.intellij.openapi.application.ex.PathManagerEx;
+import com.intellij.openapi.fileEditor.FileDocumentManager;
 import com.intellij.openapi.module.Module;
 import com.intellij.openapi.projectRoots.impl.JavaSdkImpl;
 import com.intellij.openapi.roots.ModuleRootManager;
@@ -228,6 +229,10 @@ public abstract class PsiTestCase extends ModuleTestCase {
     return PsiDocumentManager.getInstance(getProject()).getDocument(file);
   }
 
+  public com.intellij.openapi.editor.Document getDocument(VirtualFile file) {
+    return FileDocumentManager.getInstance().getDocument(file);
+  }
+
   public void commitDocument(com.intellij.openapi.editor.Document document) {
     PsiDocumentManager.getInstance(getProject()).commitDocument(document);
   }
diff --git a/platform/platform-impl/src/com/intellij/openapi/command/impl/DocumentUndoProvider.java b/platform/platform-impl/src/com/intellij/openapi/command/impl/DocumentUndoProvider.java
index 10c7773742a9..710e037e3279 100644
--- a/platform/platform-impl/src/com/intellij/openapi/command/impl/DocumentUndoProvider.java
+++ b/platform/platform-impl/src/com/intellij/openapi/command/impl/DocumentUndoProvider.java
@@ -16,7 +16,6 @@
 package com.intellij.openapi.command.impl;
 
 import com.intellij.openapi.Disposable;
-import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.command.undo.DocumentReference;
 import com.intellij.openapi.command.undo.DocumentReferenceManager;
 import com.intellij.openapi.command.undo.UndoConstants;
@@ -31,7 +30,6 @@ import com.intellij.openapi.fileEditor.FileDocumentManager;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.Key;
 import com.intellij.openapi.vfs.VirtualFile;
-import com.intellij.psi.ExternalChangeAction;
 import org.jetbrains.annotations.Nullable;
 
 public class DocumentUndoProvider implements Disposable {
@@ -115,8 +113,7 @@ public class DocumentUndoProvider implements Disposable {
     }
 
     private boolean isUndoable(Document document) {
-      boolean isFromRefresh = ApplicationManager.getApplication().hasWriteAction(ExternalChangeAction.class);
-      if (!isFromRefresh) return true;
+      if (!UndoManagerImpl.isRefresh()) return true;
 
       return getUndoManager().isUndoOrRedoAvailable(DocumentReferenceManager.getInstance().create(document));
     }
diff --git a/platform/platform-impl/src/com/intellij/openapi/command/impl/UndoManagerImpl.java b/platform/platform-impl/src/com/intellij/openapi/command/impl/UndoManagerImpl.java
index b412d811ea4d..d473da4e3ebf 100644
--- a/platform/platform-impl/src/com/intellij/openapi/command/impl/UndoManagerImpl.java
+++ b/platform/platform-impl/src/com/intellij/openapi/command/impl/UndoManagerImpl.java
@@ -46,6 +46,7 @@ import com.intellij.openapi.util.registry.Registry;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.openapi.wm.ex.WindowManagerEx;
+import com.intellij.psi.ExternalChangeAction;
 import com.intellij.psi.PsiDocumentManager;
 import com.intellij.util.containers.HashSet;
 import gnu.trove.THashSet;
@@ -89,6 +90,10 @@ public class UndoManagerImpl extends UndoManager implements ProjectComponent, Ap
 
   private DocumentReference myOriginatorReference;
 
+  public static boolean isRefresh() {
+    return ApplicationManager.getApplication().hasWriteAction(ExternalChangeAction.class);
+  }
+
   public static int getGlobalUndoLimit() {
     return Registry.intValue("undo.globalUndoLimit", 10);
   }
@@ -229,7 +234,7 @@ public class UndoManagerImpl extends UndoManager implements ProjectComponent, Ap
       myCurrentActionProject = project;
     }
 
-    commandStarted(undoConfirmationPolicy);
+    commandStarted(undoConfirmationPolicy, myProject == project);
 
     LOG.assertTrue(myCommandLevel == 0 || !(myCurrentActionProject instanceof DummyProject));
   }
@@ -245,11 +250,11 @@ public class UndoManagerImpl extends UndoManager implements ProjectComponent, Ap
     LOG.assertTrue(myCommandLevel == 0 || !(myCurrentActionProject instanceof DummyProject));
   }
 
-  private void commandStarted(UndoConfirmationPolicy undoConfirmationPolicy) {
+  private void commandStarted(UndoConfirmationPolicy undoConfirmationPolicy, boolean recordOriginalReference) {
     if (myCommandLevel == 0) {
       myCurrentMerger = new CommandMerger(this, CommandProcessor.getInstance().isUndoTransparentActionInProgress());
 
-      if (myProject != null) {
+      if (recordOriginalReference && myProject != null) {
         Editor editor = null;
         if (ApplicationManager.getApplication().isUnitTestMode()) {
           editor = PlatformDataKeys.EDITOR.getData(DataManager.getInstance().getDataContext());
@@ -344,12 +349,14 @@ public class UndoManagerImpl extends UndoManager implements ProjectComponent, Ap
     if (myCommandLevel == 0) {
       LOG.assertTrue(action instanceof NonUndoableAction,
                      "Undoable actions allowed inside commands only (see com.intellij.openapi.command.CommandProcessor.executeCommand())");
-      commandStarted(UndoConfirmationPolicy.DEFAULT);
+      commandStarted(UndoConfirmationPolicy.DEFAULT, false);
       myCurrentMerger.addAction(action);
       commandFinished("", null);
       return;
     }
 
+    if (isRefresh()) myOriginatorReference = null;
+
     myCurrentMerger.addAction(action);
   }