Ouch... I knew this would happen, but I had my fingers crossed that few people would be impacted
What's happening is that, when we've linked all our movies to the IMDb, we've realized that some of them were duplicates, mostly due to a same movie having differents AKA (Also Known As) titles. When it happened, we've kept the one of the two with the most information, while the other one was replaced by a new movie.
It's very troublesome when the users data is messed up, even slightly. Believe me, we take your data very seriously. But it had to be done. It was a most welcome cleanup of our database.
And the good news is
it won't happen again.
If anyone realizes that there's a movie in his coollection that has been replaced by another movie, please tell us what it's been changed into, and we'll be able to tell you what it was in the first place.
For instance, "Spawn 2" was blended into the animated series "Spawn (1997-1999)".
http://www.imdb.com/title/tt0118475/ (look at the covers)
I admit there's something wrong with the IMDb, which has a page for "Spawn 3" and not for "Spawn 2", but we had to do with it, the IMDb is supposed to be the reference.