I usually work with Genre and automatic Playlists. Here is an Example.
I've copied a music file to desktop and want to change the Genre. First the Genre tag is empty.

Then I've edited the genre tag and saved the changes

But when I open the file with an other program there were no changes made.

If I reboot the computer the changes are still in MusicBee. Is there any option where MusicBee saves the tags in a Database and not in the music files. I went trough the settings but I couldn't find anything.