Applying Security Deposit Amount to AR Open Item

We are processing Lease Admin Security Deposit Refunds.

After applying any deductions, if there is balance remaining on the Deposit, running RE_GENTRANS and RE_TXN_INTFC processes creates an AP Voucher to pay customer.

If however, the Customer has a Open AR item is there a way to have the Security Deposit amount pay for the open item?
(like say force these processes to create a bill with Negative amount so that AR Negative item amount can be created and applied as payment against the Open AR item?)