I have the H1B which has the validity date on the passport is 15 OCT, 2021. My actual starting date is 10 Jan, 2022. On the I-797, it is said that I am only allowed to come in 10 days before my starting date as the earliest date.
My HR at my academia institution told me that I am able to enter the country as a visitor before my starting date. However, when I arrived at the airport, the border security told me I cannot come as the H1B until 1 Jan, 2022 as on the paperwork. They provided me an emergency visa waiver B2 with form I-193 until 12 Jan, 2022 and advise me to change this to H1B so that I can start the payroll for my work.
I am wondering if I can change the classification inside the US on time and if I go out of the US, and go back around 1-10 Jan, 2022, will my B2 be deactivated when I leave the US and the new H1B will be started when I come back?
Your help is really appreciated!