they were only treated as normal Pokeballs in Diamond, Pearl, Platinum, Battle Revolution, and Ranch, mostly because they weren't coded into any of the other Gen IV games as to not spoil that Johto remakes were coming at the end of the Generation, and trading them back to HGSS had them become the Apricorn Ball(or Sport Ball) they were caught in again. Transferring to Black/White onwards, even if they were traded to the other games first, also still kept them within then Apricorn Balls. Pokemon from the Gen I and II VC games, however, always have a normal Pokeball because what ball you caught a Pokemon in wasn't stored in a Pokemon's individual data until Gen III.