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Yeah, so I'm told, if you try and clone in R/S, all you end up doing is wiping your game completely... just another reason why you should stay nice and legal instead of cheating like lamers :-p
cloning is a glitch... if a glitch still exist after like 6 years of a game production, then that's pretty bad... it's a good thing that the cloning glitch is gone. It proves that gamefreak is working hard ^^