After quantisize a miditrack you often got
same notes on the same "place" on the grid.
By Drumtracks for example, you can hear this
because these doubles notes generate a flanging
(midi never will be exact).
In the editors you only see one note.
MuSE should offer a feature to delete this doubles
automatically (in menue, or editors)
with kind regards and with many thanks for your work!