no you won't be able to this has been asked many times when ppl who have the EUR version of the game have tried to transfer their chars to the USA version of the game oh and my solution from up above will not work
That's weird ! I didn't know about this issue.
It's very strange because I own a CycloDS, and I've first played Animal Crossing Wild World with the US version. Then I succeed converting the save from the US version to the French one.
Maybe you can try this if you have a linker for your DS.