Need guidance on h1+h4+ h4 ead application

Hi all,

I have a little bit tricky situation and wanted to see if anyone faced this and can provide any advise.

My H-1B is up for renewal(its valid until Sept 2025), and we are planning to file my H-4 and EAD petitions concurrently under premium processing for my partner.

Now, I am planning to change employers in Aug, and the new employer will help file an H-1B transfer petition before joining date(assume end of July).

Questions:

Can I still file the H-1B extension in Jun/Jul with current employer, even though a new employer is filing an H-1B transfer after few weeks? (Maybe we can wait until H1b extension is approved)

If we proceed with filing my H-4 and EAD petitions with the H-1B extension(from the current employer), will those petitions remain valid after I switch employer in Aug? Can the current employer revoke or impact the pending H-4 or EAD petitions once I leave the company?

Thanks!

Current employer can revoke H1B.
H4 and EAD are personal applications and employer cannot revoke them.