--- Central.java	
+++ Central.java	
@@ -891,8 +891,14 @@ 
         }
         model.removeModeTopComponent(mode, tc, recentTc);
         String id = WindowManagerImpl.getInstance().findTopComponentID(tc);
+        /** BugId #109098 
+         * make sure you call this only on TCs that are NOT TC.PERSISTENT_ALWAYS
+         */
+        if(!(tc.getPersistenceType()==TopComponent.PERSISTENCE_ALWAYS)){
         PersistenceManager.getDefault().removeGlobalTopComponentID(id);
+        }
 
+
         ModeImpl oldActive = getActiveMode();
         ModeImpl newActive;
         if(model.getModeOpenedTopComponents(mode).isEmpty() && mode == oldActive) {