[IanMSpencer]

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

Actually, that's close enough for me, I think. The important thing for me is working from a known song and so I know it matches the the file I am updating it with, because I've just been reviewing it. 

I'll have a tinker and see what happens. I have a lot of different scenarios, individual songs, or PDF books updated by someone else with consistent layouts, but then sometimes he'll release an individual correction, and of course, trying to tidy up from an initial loading.

Thanks!