Hoax release dates for Zootopia

There is a vandal going around messing with the release dates for numerous films, and this time he's tackled Zootopia with fake release dates for the UK and France. He's given such hoax release dates to films like Absolutely Anything and lesser-known B-movies like Munchie, with ludicrous dates for re-releases or unannounced festival screenings placed at times they would never take place in. And yet nearly every accurate festival release date I try to add to a movie gets rejected?
http://www.imdb.com/title/tt2948356/releaseinfo