Get Info Titles Randomly Missing


I have moved my movies to the Hub and got all information from the Get info feature. Everything was fine. The name of the movie was corrected, the picture downloaded and the file name mkv disappeared. Now it suddenly  happens that when I switch on the hub, the correct title of the movie is gone, the uncorrected movie name appears  and the file name mkv is visible. The movie picture is there.

I switched the hub off, switched the hub totally off (5 sec) rebuild the library but still it is wrong. I rescanned all information of the movie and all ok. After a few days again the same problem with the same movies or others. Never all movies. What is the **bleep** problem?

Did you ever find out what was happening to your movies?