I know everyone is sick to death of the brain transplant hypothetical, but I'm going to answer this.
In the unlikely event that I wake up tomorrow with my mind (formed in an XX brain housed for many years in an XX body) magically transplanted into a normal XY body and retaining its character and memories, here is what I would do and not do:
I would not alter my ID from M to F, because its purpose - of enabling others to identify me by looking at me - would be undermined.
I would not throw a hissy fit if people debated publicly whether I was 'really' a man or a woman - it's an interesting question, but maybe has no definitive answer. So what?
I would not alter my body with drugs and surgery, because I have a healthy body already and don't want to damage it.
I would not use women's single-sex spaces, shortlists etc, because I have a male body, with the privilege that goes with it, and I would want to avoid harming or frightening women.
I would be open about my 'condition' with potential sexual partners, in case it would affect how they feel.
Butterfly, are your answers the opposite of mine? If so, why?