Visa Interview question

Hello, I am doing stamping on H1B extension and my latest amendment is also approved. Which I797 copy do I need to show while stamping interview? Latest amendment one or extension one? DS- 160 form has extension receipt number because I did not receive amendment approved I797 copy at the time of DS-160 submission and wanted to take earlier date for interview.

Thanks

You should use amendment receipt number as that defines your most accurate H-1 job information.