[catwhowalks]

Most fans assume that the movie and special are previous timelines before time was rewound and reset, which honestly does make sense. The series is the final time the events of the Rider War player out, but there have been many previous attempts to get to whatever the bad guy is trying to achieve, and this is one of those failed timelines.

But there's no official confirmation this is the case at all. In any case, these specials can be watched without giving away anything.