I didn't really have a good reason to change the instrument on one track, except that both were the melody, and I realized that I didn't like the vocal melody played by the sax. Not having inuitive ways to copy/paste to different tracks is unhelpful, and including a function to change MIDI sounds within a track *but* *only* *under* *certain* *undocumented* *circumstances* certainly detracts from timely workflow. How was I to know that Plogue Sforzando sounds are off limits for changing a MIDI sound? If we're expected to just have different instruments on separate tracks, why is there a function to change the MIDI sound within a track at all?