Forum:Does Hypnotize Big Daddy 2 overwrite the first one?

Hi, I've been going through Bioshock saving all the little sisters. I've just noticed I have Hypnotize Big Daddy 2, but not Hypnotize Big Daddy.

Usually, you get to keep the original Plasmid/Tonic, does this one overwrite the original or have I lost it somehow?

I'm on Hephaestus abd have backtracked to all the other gatherer's gardens I can go to and there's no teddy bears anywhere.

Thanks!