texarkana

When I open existing sessions I'm noticing a lot of extra notes on a MIDI track. I don't utilize MIDI too often, mostly drums. Everything will be fine, then the next time I open that session there will be so many extra MIDI notes that its literally too much to even clean up. It does only seem to happen on the first ten or so measures then it clears up. Doesn't seem to be a pattern either (not doubled, inverted). There can be three extra snare hits around my initial snare hit, notes that don't have an assignment to any instrument, etc. My original MIDI info is still there, however, it is saturated with a slew of notes I have not put there. Any ideas would be greatly appreciated. Thanks so much for your time, pj