Quite often these buttons don't keep the values I've given them.
I don't know what I might have been doing which would explain that.
I've deleted all controllers from my MIDI files, but when I come back to a part after having done some work on another one, or after having listened
to the file for a few seconds, my tunings have changed

Have some of you noticed that ? Or can you explain me the reason, if I'm missing something?
(as you might guess, I'm a beginner with MSI and with VSTIs as well, BTW)