Here is what I am talking about, and let me preface this by saying I know how to turn human playback on and off, and I know how to display/not-display hidden notes. When I playback anything that is a percussion roll, these notes are added. I am asking how to prevent this from happening. I have other files where this does not occur, so I am not sure why on this particular file it is. It is only happening on notes with the 3 slash roll articulation. This creates editing problems as the "hidden" notes are now counted in speedy entry, and it makes changing things slow and tedious.