Fitting the FW crossovers onto the Original Toon's Timeline.

[Original TMNT Cartoon Fan]

Originally Posted by sdp

If you don't like it you can just ignore those episodes as they usually have little bearing to the plot.

Just Hun going from human into becoming a mutant turtle and not cured when it's over, Chrell upgrading the Technodrome, making Krang a Kraang, and having Krang suddenly borrowing rock soldiers from the Kraang, when he had his own.