Hi Sparky, I don't think I have made myself understood correctly.
I have missing check enabled for everything, but I think it searches for missing chapters.
I have a movie or tv series, I catalogue it, I add it to the library, I watch it, I get tired of it, I delete it and "it's still in the library" as I can tell tvrename, it looks for all the folders "you think I have" and the ones I don't have, it deletes the entry in the library as it doesn't exist with "movies" as much as with tv series.
I can go into the programme and one by one delete the films and series I no longer have, but there is no way to do this automatically within the programme itself.