Group naming is now sequential, thus no matter how many members each group contains, it always assign same name to the groups.
E.g., Previously, for 2 groups each contains 3 members, naming was JSERV0 and JSERV3, and for 2 groups each contains 1 member, naming was JSERV0 and JSERV1.
Now, the naming is JSERV0 and JSERV1 for both cases.