I've forgot about this thread, btw she works fine for me as 3rd Gen Chansey/Blissey with Fateful Encounter, maybe if someone need a Wish Blissey for wifi can figure out how to do now.
Nintendo does allow it, i saw someone who used it with Wish.I'm just getting rejected when i use my Chansey, with my normal team i can play without any problem obviously.
By the way i got the same problem here, i didn't find a legit Chansey/Wish around and i'm trying to let my pokesav one work on wifi battle but i'm getting rejected every time.
Someone of you guys can upload his Chansey/Blissey save so i can compare to mine? Thanks .