Movie appears 2 times


I have a movie 2 times in the library. I removed both entries, then did an update library.
And got again 2 entries of the same movie.
I looked into the information. One is linked to …/BDMV/MovieObject.bdmv, the other to …/BDMV/index.bdmv.
BUT, I have also others movies in bdmv format, and all have these 2 files; but appears only one time in the library.
It is not critic, but i would like to understand.

Thanks for help


Update Library is wrong. You want to go to settings, Media Settings and Clean Library

after removing all movies from the library, update, and several cleaning, i have finally only one entry.