I guess I have to ask since it is Air India

On my last flight ORD-DEL flying on AI126 I had provided them my (new) Flying returns number on checkin. The number shows on my Boarding pass. Someone was telling me that I still need to scan a copy of the boarding pass and send it to Air India for the miles to be credited?

Is that true? I tried checking on airindia.com but the Flying returns section is down since Saturday for maintenance.