Hi Michael
Incorrect dates in the past are not a problem, but incorrect dates in the future are a serious problem.
The easiest case is if the invoice was not paid - then credit it out using the same incorrect date, and re-enter with the correct date. But that is not your case.
The next easiest case is if the invoice was paid and the check is still outstanding - then reverse the check, follow the step above, and then reissue the check. I'm hoping this is your case.
The next to hardest case is if the invoice was paid and the check was cleared but it still shows up on the reconciliation list. Using GridView ReadWrite, I would set the check back to outstanding and then follow the two steps above, and then clear the check after it has been reissued.
The hardest case is if the check was cleared and purged from the reconciliation list. That is a data repair - although it is possible to do it using GridView ReadWrite, it requires some advanced knowledge.
Steve