xcode 3.2.3 missing class actions

Question

Hi, i'm trying to connect a button to an action with xcode 3.2.3. I've done this procedure hundreds of times but now, sometime, xcode don't show class actions and i can't complete the ctrl-drag link. In this specific case, i've this data structure:

@interface Parent: UIViewController{
}
-(IBACTION)action1
@end

@interface Child:Parent{
}
@end

Now in IB i've an instance of Child but i want to connect a button to action1 declared in Parent but i don't see action1 on Child actions list...