How do I fix a voided check that was already cashed?

Question:

We voided a check in accounts payable that has now been cashed. We
reissued another check for those same invoices that was also cashed as
well. Any easy way to fix such a mess? 

Resolution:

There is no way to "un-void" a check. I think you will need to make a journal entry between AP and Cash for the first check since that transaction was reversed during the void process.