Associating non-PO voucher (paid) to a PO

Hello,

We are on Peoplesoft 9.1, and wanted to see if anyone would know how to handle this scenario:

We normally create PO vouchers by copying in the PO to the voucher when creating it. We then create a PO receipt and use 3-way matching.

However, sometimes our AP team is in a rush to pay something and creates a non-PO voucher to get something paid, b/c the PO receipt has not been entered in the system yet. 

The PO receipt then later does get entered and will be accrued, but its an orphan PO b/c the voucher was already paid as a Non-PO voucher. Is there a way (after the fact) to associate the PO Receipt to the voucher, so it does not accrue indefinitely and ultimately gets associated  to the voucher properly?