No, if they are a member of both Camp2 and join CampOn, groups.io does not list them twice. I asked that one. If they are a member of the old group, by all means we want them.
I just approved 3 of the 4 you gave me, Nancy. All were in Camp. Keep sending them to me, it is a fast check with two hands on a computer. I'll email that other one and see what their interest is.