accidentals change all by themselves
I have a symphonic band score I'm working on. It is in the key of D sharp. On some notes (ones intentionally changed: not within the key signature), the score creates flats instead of the equivalent sharp. It seems to want to revert to that notation after I work with the score and save it. I laboriously go in and change every flatted note back to its equivalent sharp. Then, it changes again (esp. after creating parts). Any ideas on what is going on?