Has there ever been a major motion picture part of a series that retconned other movies in the series in Hollywood to the point where they were no longer considered canon?
I know Highlander 2 went through various retcons. Retcons of itself that is lol
The 7th movie in the Halloween series picks up directly from Halloween 2, rendering 3-6 non-canon, or alternate reality, or something. I don't think anyone really cared about those movies by that point though (including the people making them).
edit: beaten