There is no "I" in "You"

[Thumpalumpacus]

Though A still identifies as A in B's body. You still haven't determined why or how A must identify as C ..or what that even entails.

I've already given you an example which you've neatly ignored. I've laid out how my own body has changed, and how that has affected my mentality.

Rather than address that, you seem to prefer bandying words.