Stamping When H1 is Transferred

[immihelp]

Hi,

I had my H1-B filed with company A and now its transferred to company B. My wife and first child has the H4 stamped on their passports. My second child is born in recent months who needs the H4 so I am submitting my new H1-B(I-797) approval with all the required docs.
My question is as my wife and children are in India and I am residing in USA, they will be coming to USA once my 2nd child passport is stamped with H4. Will the POE(port of entry) question for my wife's and 1st child's visa as its filed by company A?

If I go to India, will I require to get my H1 stamped again with new I-797 approval before coming back to USA?

Kindly reply at the earliest.

[immihelp]

You don't need new H1 stamp as long as the previous one is valid.