Editing credit set date to match payment date

Good morning, 

I am having an issue applying credit memos to invoices. A customer sent a payment for one invoice using one credit memo to clear the invoice in total. This credit memo was issued in December and is now being utilized in February when they are making payment on an invoice that is dated in January.

When I apply the credit memo in the customer payment screen, the credit memo set date automatically matches the invoice date rather than the actual date that they are taking the credit-when the payment was made. Is there anyway to edit this date to match the payment date as default rather than the invoice date? 

Please see attached. I need the red circled date to match the payment date.