Trading in S3 on EDGE Program--Question About Root topic

Hey guys quick question. I think I am going to be trading my S3 in today to get the new HTC One on the EDGE program. My question is my S3 is rooted and running a custom ROM (CleanROM 8.1). Do I need to un-root and put stock ROM back onto the S3 when handing in the phone through the EDGE program? Thanks!