No, you can only migrate them to Pearl or Diamond, you don't trade them.
you cant trade Pokemon diamond pearl with leaf green. You can only do that if you trade Pokemon from leaf green to diamond pearl.
trade from diamond trade from diamond
trade diamond from Pokemon diamond onto Pokemon pearl
You trade Magmar from Pokemon pearl,diamond,or platinum to ether Pokemon pearl,diamond,or platinum.
Trade from Pokemon Diamond!
Yes.
There is no way to trade a Lopunny in Pokemon Diamond and Pearl.
Yes if you want it on pearl
the only way to get it is to trade it from Pokemon diamond or pearl you can get it on diamond and pearl by special events
you have to trade it from pearl
You need to have Pearl or trade with someone who has Pearl.
trade from Pokemon pearl or diamond.