I recently rebuilt the PC I have that runs my Emby Server. I used the Server Configuration Backup plugin to backup and restore my configuration and I also have enabled writing of the Play States into the NFO files for each Library. When I reinstalled Emby Server and selected a restore from backup all the server setting and some of the Library information was restored. What was missing was the Play States for Libraries whose Content Type is "Home videos & photos". The Play States for Libraries that are "TV Shows" and "Movies" restored perfectly.
After that decided I wanted to change each Libraries sourced folder from being a locally mapped folder to being a network share reference. Once again Libraries whose Content Type is "TV Shows" and "Movies" retained their Play State and Libraries whose Content Type is "Home videos & photos" lost their Play States. This despite the Play State being accurately stored in the NFO files - the first Scan Media Library event just goes and rewrites the NFO files.
So my question is: How can I backup Play States for Libraries whose Content Type is "Home videos & photos"? Ideally this should be part of the Server Configuration Backup plugin but it clearly either isn't or doesn't work.