Em that's not what I was trying to do.
First of all I have two songs in one particular album on the phone.
On the first sync, it should have deleted only one file out of the two, leaving the other untouched on the phone.
The issue is, in reality it deleted not only the one file, but also the artist folder.
From my previous post:
17:49:36: syncDevice: command=DeleteFiles
17:49:36: deleteFiles: Delete: Music/Calum Scott/Only Human/06 Stop Myself (Only Human).mp3
This was supposed to happen.
17:49:37: syncDevice: command=DeleteFolders
17:49:37: deleteFolder: Delete: Music/Calum Scott/
But this was NOT supposed to happen.