I'm not in front of my system right now, but if memory serves me correctly, you can export the categories in QIF format and then import the QIF into a new file. Again, I'm going by memory here - from a while back - but I think this will transfer the entire category list. I seem to remember moving my category list that way once upon a time. That being said, there are methods to scrub corruption; are you certain you exhausted those? Closing the account is not the only option to address corruption.