I've just reverted the Adult Movie status of this film back to 'No'. According to the Contribution Bible:

In general, only to be used for hardcore pornography.
18+ erotic movies should not be flag as adult movies (e.g. Fifty Shades of Grey, Nymphomaniac).

This film, like many films, has some nudity and sex scenes, but none of these are hardcore in nature. Therefore, it should not be classed as an Adult Movie. Note that the 'XXX' in the film's title indicates it's the sequel to the previous film which had 'XX', which itself was the sequel to the film with 'X'. Therefore, it's not an indication that this is a porn film.