fixed DND

org.fortiss.tooling.base/trunk/src/org/fortiss/tooling/base/editor/TreeViewerEditorBase.java

@@ -178,7 +178,7 @@ public abstract class TreeViewerEditorBase<T extends EObject> extends
 						(EObject) lastTarget, dropped, null);
 			}
 
-			return true;
+			return false;
 		}
 
 		/** {@inheritDoc} */