diff -r 445d5f1d4177 -r dad881565d0a javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/KOList.java
--- a/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/KOList.java	Mon Apr 08 12:36:12 2013 +0200
+++ b/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/KOList.java	Mon Apr 08 18:26:11 2013 +0200
@@ -38,7 +38,10 @@
     }
     
     public void assign(Knockout model) {
-        this.model = model;
+        if (this.model != model) {
+            this.model = model;
+            notifyChange();
+        }
     }
     
     public KOList<T> onChange(Runnable r) {
@@ -156,7 +159,9 @@
 
     @Override
     public KOList clone() {
-        return (KOList)super.clone();
+        KOList ko = (KOList)super.clone();
+        ko.model = null;
+        return ko;
     }
     
 }