Index: NodeImpl.java
===================================================================
--- NodeImpl.java	(revision 357645)
+++ NodeImpl.java	(working copy)
@@ -787,6 +787,7 @@
         }
         if (this.parent != null) {
             this.parent.removeChild(this);
+            this.parent = null; //remove all old lineage traces from both sides
         }
         if (parent != null) {
             parent.appendChild(this);