### Eclipse Workspace Patch 1.0
#P org.eclipse.gmf.runtime.diagram.ui
Index: src/org/eclipse/gmf/runtime/diagram/ui/editparts/SemanticListCompartmentEditPart.java
===================================================================
RCS file: /cvsroot/technology/org.eclipse.gmf/plugins/org.eclipse.gmf.runtime.diagram.ui/src/org/eclipse/gmf/runtime/diagram/ui/editparts/SemanticListCompartmentEditPart.java,v
retrieving revision 1.2.2.4
diff -u -r1.2.2.4 SemanticListCompartmentEditPart.java
--- src/org/eclipse/gmf/runtime/diagram/ui/editparts/SemanticListCompartmentEditPart.java	28 Jul 2006 20:40:45 -0000	1.2.2.4
+++ src/org/eclipse/gmf/runtime/diagram/ui/editparts/SemanticListCompartmentEditPart.java	6 Sep 2006 15:18:56 -0000
@@ -175,7 +175,7 @@
 		while( childrenIT.hasNext() ) {
 			GraphicalEditPart eP = (GraphicalEditPart)childrenIT.next();
 			semanticChild = (EObject)eP.basicGetModel();
-			semanticChildren.remove(semanticChild);			
+			semanticChildren.remove(semanticChild);
 		}
 		
 		//
@@ -237,15 +237,20 @@
 	 * @param evt
 	 */
 	protected void semanticChildrenListChanged(Notification event) {
-		if (!isCanonicalEnabled())
-			return;
-		if (NotificationUtil.isElementAddedToSlot(event) ||
-			NotificationUtil.isMove(event)){
-			refreshChildren();
-		}
-		else if(NotificationUtil.isElementRemovedFromSlot(event) &&
+		if (isCanonicalEnabled()){
+			if (NotificationUtil.isElementAddedToSlot(event) ||
+				NotificationUtil.isMove(event)){
+				refreshChildren();
+			}
+			else if(NotificationUtil.isElementRemovedFromSlot(event) &&
 				event.getOldValue() instanceof  EObject){
 				semanticChildRemoved((EObject)event.getOldValue());
+			
+			}
+		}else if(NotificationUtil.isElementRemovedFromSlot(event) &&
+				event.getOldValue() instanceof  EObject &&
+				!getChildren().isEmpty()){
+				semanticChildRemoved((EObject)event.getOldValue());
 		}
 	}
 	
@@ -390,6 +395,6 @@
 	
 	public boolean isCanonical() {
         return true;
-    }	
+    }
 	
 }