Where we need to update asset clearing a/c for PO based invoices.

My client recently have enhancement to Fixed assets,

when we are creating manual invoices those are interfacing to FA(asset clearing a/c given in distribution) ,

But PO based invoices are not interfacing to FA.invoice distribution a/c is default picking creditors for expenses - clearing a/c(Track as asset is default enabled).

Please suggest me what's the necessary actions i need to take,and what are the a/c i need to update in PO,ITEM,RECEIPT,INVOICE level.