      */
      private function updateLLV(layoutTarget:GroupBase):void
      {
-        var contentChangeDeltas:Vector.<int> = layoutTarget.mx_internal::contentChangeDeltas;
-        if (contentChangeDeltas)
-            for(var i:int = 0; i < contentChangeDeltas.length; i++)
-            {
-                var delta:int = contentChangeDeltas[i];
-                if (delta < 0)
-                    llv.remove(-(delta + 1));
-                else
-                    llv.insert(delta - 1);
-            }
-            
         var typicalElt:ILayoutElement = typicalLayoutElement;
         if (typicalElt)
         {

        if (layoutTarget)
            llv.length = layoutTarget.numElements;       
     }

    /**
     *  @private 

        
        updateLLV(layoutTarget);     
        if (variableRowHeight)
        {
            var endIndex:int = Math.max(0, Math.min(measuredEltCount, eltCount) - 1);
            layoutTarget.measuredHeight = llv.end(endIndex);
        }
        else
        {
            var vgap:Number = (measuredEltCount > 1) ? (measuredEltCount - 1) * gap : 0;
