No, you keep it forever.
you just trade it and it evolves during the trade. then ask your friend to trade it back
There's no possible way to trade back. Once you've transferred from Emerald, there's no going back. It's in Diamond forever, or at least until you delete your game.
You trade Haunter to another Diamond, Pearl, or Platinum version and it will evolve into a Gengar. You will need to trade back to your original Diamond game to get the Gengar. Hope I helped, bye
it doesnt evlove by level. you need to trade it and it will evlove for them, then they trade it back.
get giratina give the girseous orb to it and trade to a Friend and trade it back to diamond or pearl
You need to find a Metal Coat, give it to Scyther, and Trade. Then trade back.
Actually you can trade Shaymin and Giratina to Diamond/Pearl from Platinum but if you do - Shaymin will revert back to its Land Forme and Giratina will revert back to its Altered Forme.
Have a friend with Diamond/Pearl and a ds. Trade your Kadabra to your friend, he will evolve trade back and Alakazam is all yours!
No, you can't trade between Diamond and Ruby, but you can transfer Pokemon from Ruby to Diamond after you've beaten the elite four on Diamond, but unfortunately, you can't transfer back, so really think about it before you try to.
You have to have a Friend kings rock poliwhirl first put your kings rock on poliwhirl then get A friend to trade and trade back
you will need to have one of your friends trade you a palkia, and then have you trade it back. You don't even need to exit the trade, it will automatically add Palkia to your dex.
first, capture a graveler then go to the union room in any Pokemon center then trade. It evolves. And then you trade back and have a Golem. :)