Finally, something the Psydragon is good at. Just to clarify, here are
all the steps to make sure it works perfectly:
1.Save in front of the battle tower pc
2.Deposit up to 5 pokemon you want to clone into
any box, it doesn't matter if there is other pokemon in it
3.Save again
4.Withdraw the
same exact pokemon
5.Talk to the link battle lady and choose the CHALLENGE option
6.Choose OPEN LEVEL
7.now choose any two able pokemon you want to battle
(since legendaries can't be chosen you must always do this cloning glitch with at least two non-legend poke's, and it is OK to pick the pokemon you are trying to clone for the battle.)
8.Choose yes for the save option
Now here comes the part nobody seems to do which is why it screws up all the time-
9. After you choose yes to save there will be a one second pause but
this is not when you turn off your game!!!
10. She will ask you one more time if you want to save, choose YES
11.Then she will say "There is already a saved file. Is it okay to overwrite it?" Wait for the dialog box to pop up with the YES and NO option to appear and
after it does(not before) then you turn your game off.
If this doesn't work for you then you can't follow directions and you should give up and go play Yu-Gi-Oh instead !!!