[Geoff Bacon]

It is deleting solely from the import source folder; it is not going to look in all folders to see if they also have a copy.

This is typically used as follows:-

1. download or transfer one or more songs (ideally to an "empty" folder)
   
2. import the songs into MS using the "delete after importing" option
   
3. it does what it says on the tin and the import folder should be as it was before you downloaded any songs (makes it easy to see what is needed for future imports)
   

You probably only want to do this when you have selected "let MobileSheets Manage My Files" (in the Storage options).

Don't enable "delete after importing" if you are importing from your main "source" folder!

Geoff