Can the PO exchange rate variance Gain/Loss be transferred to the released Gin/Loss after performi

Hello Expert;

1. When we match invoice to a PO if there is a difference in the PO Rate VS Invoice Rate oracle automatically make the difference in the PO Exchange rate variance set in the Financial option.

2. When performed invoice payment , if there is difference between payment Rate and Invoice Rate, oracle automatically put the difference in the Realized Gain/Loss set in the payable option Currency Tab.

3. The PO exchange rate variance still not changed,  is there a way that when the payment was performed the PO Exchange rate variance will be transferred to the realized Gain/Loss accounts