Hi CheriseAQC,
If you void the checks, you cannot use the same check numbers over again. You could void them anyways and cut new checks and note that they are replacements for the checks sent to the vendor. Of course, the original check numbers will clear the bank but they will be marked as Voided in SL. It's not a perfect solution.
I assume from your statement of the issue that the balance in AP now doesn't match the GL - is that correct? Did you release the batch in AP to period 3 but posted in GL to period 4? If that is the case, voiding the checks is the only thing to correct that since the batch has been released and posted.
If I have misunderstood, please let me know.