Drag and Drop within RadTreeview

[Yoga]

I am using a radtreeview say of the following structure.
Node A
    Node B
        Node C
            Node D

If I drag and drop Node C over Node A. The tree view changes as
Node A
    Node C
        Node B
            Node D

Now if I try to drag and drop  Node B over Node A -> Nothing happens. Please help me to implement this.

The treeview properties are:

 

<telerik:RadTreeView ID="radTree1" runat="server" OnNodeClick="radTree1_NodeClick"

 

     Height="160px" EnableDragAndDrop="True" OnNodeDrop="radTree1_HandleDrop" >

 

 

 

    <CollapseAnimation Type="OutQuint" Duration="100"> </CollapseAnimation>

 

 

 

    <DataBindings> <telerik:RadTreeNodeBinding Expanded="true"/> </DataBindings>

 

 

 

    <ExpandAnimation Duration="100"> </ExpandAnimation>

 

 

 

</telerik:RadTreeView>

The onnodedrop event is triggered when child node is moved above. OnNodeDrop event is NOT TRIGGERED when parent node is moved below.

Thanks in advance.