Just to let you know, always send back the same poke that was traded over when you ask for cloning. If you truly want that pokes, ask first before keeping it.
In this case, I didn't care if you kept it, but you should ask. Sometimes people send a special poke over in good faith to show they can be trusted with your special poke. Keeping it without asking would be considered a suspicious act.
Who's latios was that, btw? I hope it wasn't special to you, because I probably won't keep it. If you want it back, tell me.