I'm asking that because I'm terribly disappointed with Nintendo. I want to start a new game on Pokémon HeartGold but it seems I will not be able to keep any of my Wonder Cards.
I managed to get some Wi-Fi Events and had to delete some Wonder Cards to get new ones, just like everyone. However, I thought it happened because I could keep only 3 wonder cards to reuse in the future (I gave priority to Wonder Cards with Pokéwalker Routes).
Since I have just found that not only you cannot keep your Wonder Cards when you restart the game but also you cannot send to or get Wonder Cards from a friend, I ask you all: what's the use of Wonder Cards?
Also: Don't you think that's just unfair losing them all like that?
Honestly, I think Nintendo could at least repeat some Wi-Fi Events, since the cycle of Generation IV has already ended and there's no point in keeping some features which are already in the game inaccessible forever. We shouldn't be compelled to keep one save for life like that.