Credit Sales Order with Purchase Order for Return

Hello Team,

I am having some issues with the creation of a credit order with a purchase order.  We are not able to use the RMA process because our returns are too loose and we need to be able to modify the return.  I am trying to implement the creation of a credit order and creation of the purchase order (for returning goods)

On the Credit side my line type is setup so that it comes in as a negative line.  However, the purchase order line should not be negative, it should come in as a positive, but its not.  I have the line type for the Purchase order setup as a positive number, however, I think its coming in as a negative because that's how the credit order is being created.