[Klojum]

Not everything is exported from the MySQL databases with the Video Library Export, if that's what you mean. Only certain metadata of videos stored, and not the contents of the 'settings' table, afaik. If you want to keep those values, the only database export/backup method is to use 'mysqldump' for a full backup of the whole Kodi video database.

The fact that some video players do not support certain functions is not the problem of making a backup. Right now, the shared database in Kodi does not support multiple/different video players and their settings per video. I doubt it ever will.