No, you should not lose any meta data. This plugin is getting things from 4 places. The plugin is from one of the OMV Extras repos. Mono is coming from a Xmarin repo. Emby is coming from a Emby's github. And there are some libraries I built, for various cpus, coming from my Github.
GOD I'm dumb.
I confused thinking that "FORCE UPDATE" would appear next to "Restart Server" but no... Now I rememebered that it is in WebGUI of OMV in Emby Server part.
That worked. I Forced the update, restarted the server, the page, and I'm in 3.0.5821.0.
THANKS!