Payment Predictor - can overpayments stay with the original item (making it a credit balance) instea

When a user manually applies an overpayment, to an invoice, they want the overpayment to remain on the invoice for easier tracking, they don't want to place it on account or adjust the overpayment. 

For example, invoice is $7,000.  Payment is $10,000.  On the Payment Worksheet, select the invoice and change the amount from 7,000 to 10,000.  Press Refresh.  A new line is created with the same Invoice ID, and the amount is -$3,000.  Therefore the overpayment stays with the original invoice. 

Can I automate this in Payment Predictor?  It doesn't appear to be the case through config:

Overpayments create either:

- WS-04 Prepay and Item