Scenario: On H1 with Employer A with Valid I797 and I94. Applied for H1 under Employer B and started working for Employer B after getting H1 receipt number. Worked for 5 days (filled I9 also) with emp B and noticed some documentation issues and deciding to go back to employer A now. Do I need to fill a fresh I9 with Employer A again? I dont have any gap in paystubs since I worked only 5 days for Employer B. Please advise.