if its a Japanese copy, than yeah.
No.
No, because things like apricorns aren't found in Diamond, besides the fact that the codes just wouldn't work being made for a specific game.
No, the movie Arceus that has been distributed in Japan is not the only Arceus that will work for the Heart Gold and Soul Silver Arceus event. That Arceus was special, because of the fact it unlocked a special Pichu event in Heart Gold and Soul Silver. Any Arceus will work for the event in which you can get a Level 1 Dialga, Palkia, or Giratina in Pokemon Heart Gold and Soul Silver.
my opinion is it only works in the original gold version,not heart gold and soul silver it works on silver but not soul silver.
No is what people been saying since its a brand new game in the us but jp version will probably work.
no
It works autimaticaly.
yes
It should but sometimes it doesn't
No! The pokewalker works fine in soul silver.
Just work with your Pokemon alot and that should do it.
Go to the silver tower and fight Lugia. If that wont work than go to thr profese and he will tell you what to do.