Edit: *RESOLVED*
I just edited 6 in pokesav, 3 are working fine but these 3 are all giving the problem with your pokemon error when connecting to wifi match.
Tyranitar captured 5th gen, absol and scizor were hatched 5th gen
I have had them in and out of the box, and in the party solo with all legit pokes, and these 3 were the only ones to cause the error.
anyone have any suggestions?