This is really a bit ridiculous.  If QB wants to be an accounting system it should be an full fledged accounting system.  You should be able to date a voided check as well as a bill so it does not effect the prior year.  I have a case where I do not want to reissue the checks that are voided and while I can do a JE to clear out the AP liability and the expense in the current year, I can't clear the actual bill without deleting it which will also change the prior year balances.  How do I void the check in a prior year and void the bill without effecting the prior year balances?