Version 7602 Test environment.

Trying to reconfigure how our groups are laid out.  Prior to the introduction of sites in SDP we had to create groups corresponding to each site and assign technicians accordingly.

i.e.
Support - Site1
Support - Site2

Now since Sites have been introduced to SDP the result looks something like this:
Support - Site1, Site1
Support - Siet1, Site2
Support - Site2, Site1
Support - Site2, Site2

As you can see this can be administrator hell when trying to assign technicians to groups as the groups have now doubled.  What is the best way to go about to remove the duplicate groups and have the list look something like what we originally had intended?  I have tried deleting the extra groups but i get an error sayins "Cannot delete group as it is being used by another module".

Any help is appreciated.

ice