H1B Transfer after Extn is approved but not stamped yet

[guyanratan]

I got my H1B extension approved last month, till april2018. Currently I am in India, so as per my understanding I need to get it stamped before next travel. Also, my earlier I94 has expired too during last month.
I have not yet stamped the visa after the extn is done.
What I want to know is:
1. if I join another company now, while in India, can I transfer the Extended visa to the new company?
2. can I raise the stamping request through new company?
3. do I need to wait till the H1B transfer is done to the new company and go for stamping afterwards?
4. what documents (related to visa transfer) should I have before leaving the current company?
5. what could complicate the matter while transferring the visa in this case?
6. I have travelled to US through my current company and just returned 2 months back.

I would be really grateful if someone can help me with these queries.

Thanks a lot.

[shervin143]

1. if I join another company now, while in India, can I transfer the Extended visa to the new company?
>>> Visa cannot be transferred. Only the H1B petition can be transferred.

2. can I raise the stamping request through new company?
>>> petition need to be transferred first. Once the petition gets approved, then you can go for visa stamping.

3. do I need to wait till the H1B transfer is done to the new company and go for stamping afterwards?
>>> Yes.

4. what documents (related to visa transfer) should I have before leaving the current company?
>>> Copy of all H1B approval notices.

5. what could complicate the matter while transferring the visa in this case?
>>> No complications if filed properly.

6. I have travelled to US through my current company and just returned 2 months back.
>>> Doesn't matter.

[guyanratan]

1. if I join another company now, while in India, can I transfer the Extended visa to the new company?
>>> Visa cannot be transferred. Only the H1B petition can be transferred.

2. can I raise the stamping request through new company?
>>> petition need to be transferred first. Once the petition gets approved, then you can go for visa stamping.

3. do I need to wait till the H1B transfer is done to the new company and go for stamping afterwards?
>>> Yes.

4. what documents (related to visa transfer) should I have before leaving the current company?
>>> Copy of all H1B approval notices.

5. what could complicate the matter while transferring the visa in this case?
>>> No complications if filed properly.

6. I have travelled to US through my current company and just returned 2 months back.
>>> Doesn't matter.

Could you please elaborate point no 4. Do you mean the h1b extn approval I797 or are there any other documents?