we tested it quickly in our lab (only 1 eaps ring) and it gave no problems. We did see a log event that EXOS was unable to start the new domain as it was already started but that seemed to be the only issue.
10/21/2015 12:55:00.22 <Info:EAPS.DmnInfo> EAPSD TAC-EAPS - Event Start. Domain has already been started. 10/21/2015 12:55:00.22 <Info:cli.logRemoteCmd> 10.112.2.123 (telnet) admin: configure eaps "TAC_EAPS" name TAC-EAPS
I would advice to do this on a quiet time in case something does happen.