Board Thread:Episode Discussions/@comment-25319479-20170531105724/@comment-24824859-20170606000337

The Wikia Editor wrote: I'm not disputing that, I agree with you. It's pretty safe to say that none of these characters were even a concept when Gaiden or the movie were written.

However, the fact remains that the anime (at least the current arc) is being carefully supervised by Kodachi and Kishimoto for the sake of maintaining continuity and making sure that "nothing unnecessary" goes into it, which wouldn't be necessary if none of this is supposed to be canon.

When the anime gets around to adapting Gaiden, I'd imagine they would add some filler scenes to show where the characters were during those events. I still highly doubt that Gaiden will be altered to fit in the continuity of the current arc. Overall, this is a very dumb move and the franchise is pulling the same sh!t like the DB franchise