H4 EAD approval status while H1B amendment is in process

My spouse H4 EAD is approved till Oct 2024. I am on H1B and moving to different state. My work is complete remote. and employer is filing for H1B amendment. When my H1B amendment is in process, I assume my spouse H4 EAD approval stays intact and she can continue working. Please confirm.
Or does she need to wait for approval of my H1B amendment and then resume working?

Your understanding is correct.

No, she can keep working while your amendment is in progress.