Clean-up - Condense

I have been using QBP for 16 yrs and every 3 years or so, I would condense the data to make the file size smaller. I have QBP2007 and the new way is Clean up, with 2 options: Remove transactions as of a specific date OR Remove ALL transactions. I have been removing transactions as of a specific date each time I've condensed/clean-up. This time the file size stayed the same after I asked it to leave me the last three years ! Previously the file size became much smaller. I would like to make my 70mb file smaller if possible, but I don't want to kill all of my transactions. Am I doing this right? Jeff