1) Is H1B cap-exempt to H1B lottery-based considered a change of status?

2) If I currently have an H1B cap-exempt visa and am filing for an H1B petition in June, when can I not travel outside of the US - from now to June, June to Petition Approval, or from Petition Approval to Oct ? My current H1B visa would be valid until Nov.

I started the self-NIW application while working with employer A, but for some reason, I could not file the petition. Later I got laid off from employer A and now I'm working with employer B.

I want to restart the NIW application. Questions:

1. Since I got laid off with employer A, will that be a challenge/red flag in my petition?

2. It's only been one month with employee B. Shall I wait some time at company B to restart my NIW application? or doesn't it matter?

Case: Picked for H1B lottery.

- What happens if the company lays off after June but before October 1? Would I stay on my current visa status? Or will I be on H1B but with a 60-day timeline to find the next job?

- Does the status automatically change to H1B on Oct 1? or does immigration require paystubs for a couple of weeks to prove our employment?

- If I file the petition with two companies separately, how will immigration decide which one to approve? Will they approve both?

- Are there any travel restrictions from June to Sept