I feel like this is both too complicated and too unnecessary a question to warrant a label.
Are you attracted to a woman because she's a woman?
Are you attracted to a woman because she used to have a penis?
Are you attracted to a man because you're into genital mutilation?
Are you attracted to a person because you like who they are, regardless of gender?
Were you attracted to this person before the sex change? Did you know about the sex change? If you were attracted to someone considering a sex change, would you still be attracted to them if they went through with it?