Fire rated cap for recessed lighting can
After much wrangling, the inspector provided a suggestion that worked.

He indicated that the below fire hats can be folded and inserted through the 6 inch hole. 

http://www.tenmatusa.com/insulation-protection-covers/ff130e-recessed-light-draft-stop-cover/

Then get the can in place and we are all set.

I now have approval and final inspection done