H4 EAD to H1B Transfer 2020

Hi Kumar,

I have H4 EAD valid till Dec 2021. Employer A has filled my H1B this year, it got picked in the lottery and now I have I797 approved with start date Oct 1st, 2020. Meanwhile due to COVID -19 I lost my job with Employer A and got a full time position with Employer B, joined Employer B on H4 EAD and currently working. Below are my queries:

  1. What’s the safest way to protect my approved H1B and Job with Employer B (as its full time I don’t want to change).
  2. If my current Employer i.e. Employer B files a transfer on October 1st, 2020 then what’s the probability of approval (first time H1b)
  3. In case my COS (H1B transfer to Employer B) gets denied then will my H4 EAD be valid? Will I be able to use it for the future employment with Employer B?
  4. As my I797 with Employer A is approved for 3 years, so in case of the denial with Employer B, In future any other employer will be able to file it again within 3 years from now?

Looking forward to your reply.