[Zubersoft]

I just checked the logic and if you remove a file from a song, it's going to remove all of the annotations with the file. They won't be preserved even if you add back a new file that had the same name as the previous one. If preserving the annotations in this scenario is something that is important to users, I can consider adding code to handle it, but the logic can get a bit complex. My preference is just for users to use the swap file feature or manually swap the file on the SD card. I'm planning on adding a popup menu if files are long pressed on the song editor screen, and one of the things on the menu could be "Swap File" to make it easier to access that functionality.