this is the real way

1.go to the p.c. in the battle tower
2.deposite the pokemon u wont to clone(if u havnt used ur master ball give it to 1 of the
pokemon before clone to make a double.)
3.save the game.
4.withdraw the pokemon u deposite before u save.
5.go to the lady with the muti link battle( i lost my sudwoodo)somehow
6.say yes the fist time she ask u to save the game there will be a gap the she will ask
again say no and shut ur game off and back on oh and enter 2 liggal pokemon that u dont
wont  to clone