VC Configuration issue

Hi Experts

we are doing the following Process we Create Sale Order In Plant A for Finished Product, & we run MRP & Trigger SFG Requirment in Plant-B,when we are Creating Manual Stock Transport Purchase Order for FG Product,VC Configuration is Not getting Copied from Sale Order,how can we do That is there any Setting in Customisation.

If we Create PO with REF To PR we are getting the Configuration Copied from Planned Order.