I cannot merge several titles

There are 2 adult anime titles in the database that have duplicates

Tokio Private Police - https://www.imdb.com/title/tt0242043 duplicate - https://www.imdb.com/title/tt33303876I tried to merge them, but I was unable to. (251227-061233-466000, 251226-022513-676000) My assumption is that this is because one version has "Adult" listed in its genres, while the other (duplicate) does not.  Akiko - https://www.imdb.com/title/tt0362399   duplicate*? - https://www.imdb.com/title/tt14617028

 As for Akiko, I'm actually not sure which version to submit a correction request for. One version is listed as a 1-hour video, the other as a TV mini-series, but it's actually a 2-episode anime that now seems to be sold as a single-hour video (both episodes on one disc)

 I checked, and these anime do not have non-hentai/adult versions (like, for example, A Kite and Mezzo Forte do). Furthermore, A Kite and Mezzo Forte themselves are only listed once in the database (with no duplicates)