Thanks Arlo. Then I have 2 things.
Firstly, if I have changed my arrangement of my backing track for a song, and created an amended recording in iTunes (and deleted the old one from iTunes) and synced that with my iPad, then to change the recording attached to my existing song in my SLM database, should the procedure be - tap Songs/existing song name, then under 'Recordings' in right pane delete existing recording, then tap Add Recordings and select the new amended recording from the list and tap Save ? Does that then record any new timings in the relative sets and shows?
Secondly, the 'duplicating' issue - Using the same amended backing track scenario above, what I have been doing is deleting the 'old version' of the song from my SLM database, then importing the 'amended version' of the song via the Playlist (batch) method. What I've been experiencing though, is on the Import Preview screen there are often several 'extra' songs to be imported! These 'extras' however, are already in my SLM database and working, I have not altered their recordings or details in iTunes or anywhere else, and don't want or need them imported. If I proceed with the Import, these 'extras' are added to my songs database, meaning I now have two identical copies of the same song - but the previously existing song now cannot be played (I assume because its attached recording/s now don't exist). As SLM would normally not import a song whose song title in the playlist matches an existing song name in my database - I'm baffled. This 'duplicating' also often happens if I am importing a newly created song as well. It does occur to me though, that I have at times had troubles with iTunes syncing and perhaps that may have more to do with this than SLM?