When i look in the Collection (subject) then i only see one movie in the collection parts "Wallander 09 - Täckmanteln (2006)" but if i try to add a movie that should be in that collection then i get the error message that the movie already is in that collection. Example add movie Wallander 07 - Mastermind brings this message: The movie you are trying to add is already part of the Wallander (Krister Henriksson) collection.

So what do you think about this, iam new here maybe this has been talked about before.