Hi
I have just done a backup of my Calibre setup and i see that i have actually two folders:
1. %userprofile%\documents\Calibre, that contains my books and two files: "metadata.db" and "metadata_db_prefs_backup.json"
2. %userprofile%\Calibre Library, that contains only the two files i mentioned before.
What is the use of this last folder? I see the last modification done to the two files in it are from march and november 2020.
I need it?