For chronological accuracy, I have been using the old name and gender when referring to a past, pre-transition person, and the new name and gender when referring to them generally.
But I had a realisation that this could be considered rude. I’d like to hear from some trans people on their opinion.


You may want to ask to said person directly. Being interested toward one’s wellness sounds okay to me, I don’t know.
I am very early in my transition, though I’d rather be called she/her even talking about pre-transition time because it actually is behind me.
Hope it helped you even a little
I know a lot of trans people second-hand, but not first-hand. So I have not had the opportunity to ask anyone directly. A cousin of mine from Canada (the other side of the world to me) is transfem. A step-cousin-in-law is transfem, but I haven’t met her yet because the step-father-in-law is anti-trans (which I have been vocal about disagreeing with him on).
Anyway, thanks. I’ll take your advice on referring to them by their post-transition name and gender, even while referring to them pre-transition. Peace!
You are already doing great, you know ? You really seem to be a kind person and I get a better picture of your situation (thank you).
Yes, defaulting to post-transition name and gender certainly is the right thing to do.
Hope more people were interested as you are. Bye ^^