Whenever I add a staff to an existing score, many dynamic markings will suddenly appear throughout the piece in seemingly random places that I need to then go hunt through the piece and remove. It's a huge inconvenience and waste of time. The rumor is that they are left over from previous versions of the file, but this also happens in brand new files, so that can't be the issue. I've asked around in the forums and everyone is familiar with the phenomenon and is equally frustrated. It has been a long-time bug. Can you please fix that?