Item won't show in Collections

[KodiUser1138]

Still on 10.9.7 untill all the 10.11 stuff gets sorted but having a new issue with collections. Added Mission: Impossible The Final Reckoning to my MI collection multiple times. It shows up properly in the collection XML file but it never shows up displayed in the actual collection. No idea why. All the other films, soundtracks and series do. But this one just won't. Any ideas what might be happening? There is nothing fancy or different about the file location, format or naming than anything else in my library. All very starndard stuff. I am confuessed.