Spell check filter-by-transaction-date has stopped working in TS 2009

Colleagues: I have TS 2009.  For each of the last few bill cycles, the filter-by-transaction-date function in the spell check feature has stopped working.  Instead of checking only the slip entries indicated by the brief range specified in the filter -- which I always set for just the previous complete calendar month, the same month I'm sending bills for -- the darn spell checker is ignoring this limitation and is checking EVERY entry going all the way back to *2005* -- in other words, all the entries I've ever made.  I don't know why this suddenly started happening, or how to fix it.  I can't take the time to RE-check over 10 years' worth of entries each and every time!  Any ideas??

Thanks, Robert