I tried around for a while now since I would have lost one month of progress and found a possible way to rescue a working recent autosave:
I looked for the oldest autosave in Dal'Galar, which was an autosave*.ess.bak file, not the *.ess file. So what I did was to delete the corresponding autosave*.ess file and rename the autosave*.ess.back to autosave*.ess to force the game to use it instead and it worked, the savegame was uncorrupted.
Will complete it now without magelight
