When I duplicate a track in the new organize tracks view, it deletes all notes from the source track. It used to not do that, so I was a little surprised and confused when I noticed.
I usually duplicate tracks to either separate low and high frequencies or to make a different chop. In any case, I don’t want the notes from the source track to be deleted.
It should either not delete the notes, ask me if I want to delete them or there should be an option somewhere to not delete them by default.
Do you have fixup pattern turned on? The F1 key will be illuminated if it is.
Duplicate will move the pattern events to the new, duplicated, track if fixup is on, and not move them if it is off.