[Zubersoft]

If you prefer to make changes within the song editor, you can always just remove the existing file, then tap the + icon and add the new version of the file. If the filename matches, MobileSheets will carry over the annotations, bookmarks, link points, etc. You can also long press a song on the library screen, tap the three dots at the top right and select "Swap File", but this doesn't provide the visualization you are wanting.

Mike