Datagrid AS3 Binding problems

Hello and good night.

My problem is that I have to datagrid one full of data and another empty, if I copy elements go well, with drag and drop

Global.vars.Drag_elements=new DataProvider(e.target.selectedItems)

The problem is when I change elements in one datagrid change in the second. I will like control this.

Sorry my bad english… I not like the binding automatick elements.