No clue. Just passing on what Amazon stated about the term Rebuild for the DVD box-set release they had listed for the movie series. Heck I never heard the term rebuild used before recently. Always just heard the releases .0, .10, .11.....etc.
I watched movie 1 dubbed then the subbed versions for movie 2 and 3 as soon as they were released then re-watched 2-3 again once the dubbed versions were released like 1.5-2 years later. My only guess is that the dvd final release on Amazon just has more scenes when they state rebuild.
The problem is with all these rebuild versions released by different people. Its hard to tell which one is the final complete rebuild movie unless its ripped directly from the final dvd/bluray version release
I'm a fan of the series but not a big enough one to watch like 3-5 different versions of each movie one after the other to find differences. If i missed something heck with it. One day once the full series is complete final version box-set of all 4 movies is released I will binge watch all 4 movies.