I recently used the legality checker to make legendaries(mostly Sinnoh legendaries). They are legal according to the legality checker program. However, most of the legal types are dealing with the GBA typings (uncommon GBA etc).
My question is are these typings okay? Since the most of the legendaries are from Sinnoh, I find it weird that the program recognizes them as from GBA games where they never existed. I hope I explained this okay. Please help.