I watched an Anime (madoka magika)

and there's a quote 

that I don't quite get it.

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<< in subbed version of the Anime >>

A : Is there a way to get her Soul Gem back?

B : None, as far as I know anyway.

 

<< but in dubbed one >>

A : Is there a way to get her Soul Gem back, the way it was?

B : If there is a way, I'm not aware of it.

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And here's thing I can't understand.

It bugs me that B used "not" in the sentence.

Shouldn't B say like "If there is a way, I maybe aware of it"?

or "If there isn't a way, I'm not aware of it"?


thx...