NIW -Some Questions

[SunJune]

Hi All, 

I got my NIW approved in 2018. I have some questions hope to get help with:

1. Does changing jobs in the same field affect the NIW approval in any way?
2. Does changing teams within the same organization in the same field but at a different location (different state) affect NIW approval?
3. How can I update my contact information (address, phone number) for correspondence?
4. Does NIW I-797 need to be transferred to a different NVC if one moves to a different state? For example, moving from WA to TX. Currently my case is with Department of State National Visa Center(NVC), 32 Rochester Avenue, Portsmouth, NH -3901-2909

Thanks in advance!