#self.parentBlocks = oldItem.parentBlocks #TODO. We took that out when pasting after deleting a track and recreating failed. Why do we to copy the parentBlocks when a parentBlock is added during block.insert anyway? Wild guess: we don't.
deflogicalDuration(self):
"""Used for positioning items on the tickindex and subsequently midi export and GUI spacing.
AchordcanhavelogicalDurationD4butoneofit's notes can have a dot or a user duration mod.