Is this possible to do if I already have another event one uncollected?
Psh. Who hasn't used an Action Replay to procure all the legendaries?
Let me guess. You downloaded a Pokewalker course but are unable to access it since you lost your PokeWalker? That happened to me...
I downloaded the Jirachi but I'm not collecting it until I can be bothered to reset for stats or get a shiny then learn how to do that time/date random number fixer thing.Anyway, it seems to have worked - presumably it'll just pick them up in order like when multiple "mom bought 350 oran berries" orders stack up.
Woot. Got a mew :D