Unable to enable Wiki/Blog for LDAP groups in WGM

Similar to the issue in this existing topic: https://www.afp548.com/forum/viewtopic.php?showtopic=18634 10.5.5 OD Master with magic triangle to AD domain Groups created with WGM in the LDAP node. Web Service Wiki & Blog enabled. Site configured with FQDN. I am unable to set the "Enable the following services for this group on:" option within WGM for any of the groups that I create. My only choice is "(None)" which leads me to believe that WGM doesn't recognize an existing site/web service on the server. Any thoughts?