Yes, you can add –rename to make sure devices assume consecutive names in the new group.
All:  We need to split one of our existing RDF Groups (17) into 2 x seperate RDF Groups (17 & 18).  I have been researching "symrdf movepair" to do that.  We "manage" our RDF Groups and Remote BCV synchs/splits with Device Groups.  What I'm having trouble finding, is, once I "symrdf movepair" my R1s->R2s from RDFG 17 to RDFG 18, how do I move the devices in the Device Groups?   I did find a "symld move LdevName" command and a "symbcv move dev" command which allows one to move devices from one device group to another.  Is that how I do it?     Stuart
is there a "movepair" for Device Groups?