@
jecilop - I responded to your other thread on 'logical columns not being copied'
The
metadata_db_prefs_backup.json file is NOT used at run time, it only comes into play if you do a database restore.
So, if you want to 'impose' the preferences from library B on library A, then rename
metadata_db_prefs_backup.json in library A to say
*.json.save, then copy the
metadata_db_prefs_backup.json from library B to library A, and then do a database restore on A.
Oh yes, make sure you have backups of your libraries before you start
BR