Dear Hari,
we had similar issues. In may case role status for production was PRD. I got recommendation to reconfigure and change (at least on sample of roles) from PRD to PRO , then reimport to change the corresponding attribute for all the production roles in order to get roles to come into the request when using Copy Request functionality.
I will update how this worked out in may case - but I guess it is worth to try at least,
Filip