I think no problem if you sent his I-485 with yours at
same time,because usually CIS consider them as a same case,althrough you & your hu*****and have different A#.
If you still feel worry,& want to virefy no any error on your case,you may write a letter to the service center where sent you RFE ,explain your worrying & require them switch the newest information (RFE had been responed) to your receipt number.
Golden sheet isn't necessary,it just mean the response
for RFE,without it,your letter still be processed in
a few weeks.
same time,because usually CIS consider them as a same case,althrough you & your hu*****and have different A#.
If you still feel worry,& want to virefy no any error on your case,you may write a letter to the service center where sent you RFE ,explain your worrying & require them switch the newest information (RFE had been responed) to your receipt number.
Golden sheet isn't necessary,it just mean the response
for RFE,without it,your letter still be processed in
a few weeks.