My music library has about 8,000 songs, all of which were rated when I checked a month ago. But today about 1/3 have no ratings. I don't understand what is happening to cause this. I have not done anything to reorganize folders or other aspects of the library. I just added a few new songs and pasted some lyrics which were not available through the Music Bee lyrics lookup. This happened to me a year ago and I never figured out why.
Herb