H1 re-stamping during travel to india

Hi,

I came here in US in 2014 and my visa got expired in August 2016 and my previous employer filed for the H1 extension the same year for which I got approval in January 2017.

I changed my employer in April 2017 for which I got my petition approved till 2021. As I am planning to travel India for 2 weeks in November end, I am worried about H1 - restamping. Please let me know what all interview questions I should be prepared for?

Please advice.

Thanks & Regards, Anjali