A.T.E.

I'm filing Form 843 to get my SS and MC taxes back. To file this form you need to attach:
- a copy of your visa
- Form I-94 (Arrival - Departure Record)
- If you have an F-1 visa, FOrm I-20
- If you have a J-1 visa, Form DS-2019
- If you are engaged in OPT, Form I-766 or Form I-688B

Since I'm on a H1 visa since October, what copy should I submit (H1 or F-1) and which I-94 (I have my current one from the last time I entered the country in Jan but I also have a copy of the one last one I had while I was on F-1)

Thanks a lot for your time

Submit the F-1 visa and the last I-94 that you had while on F-1 visa.