PO Matching against a Posted Voucher

Good Morning,

I was asked a question today that for some reason has never come up to me before.

Is there a way to associate (and thus match) a Voucher to a PO after the voucher has been posted and paid?

The example would be AP accidently, fully processed and paid the voucher as non-PO.

I don't think there is anything to be done.  The only solution I can offer would be to key a zero-dollar voucher where you copy in the debit line from the PO then enter an offsetting credit line (non-PO).

Am I missing some cool functionality that I should know about?