Hrm, ok let me try again. What I mean is that if someone is female, interacting with men in a sexual manner may be completely unappealing to her, particularly if she's a man in a female body.
Yet, when that person transitions to male, interacting sexually with gay men is very different and he may find himself attracted to men.
Or, vice versa. Someone born male may not, in a male body, find sexual attraction to men, but when she transitions, she may find that she is sexually attracted to men.
So, object orientation may change and does change in some cases. It didn't for me, but I have known guys for whom it did.
Dennis