We have Exchange 2003 and Exchange 2010 running in co-existence with 2003 due to be decomissioned soon. When creating distribution groups in ARS they create fine but I noticed they were being created against the Exchange 2003 server! Under Exchange Advanced you see First Administrative Group which is 2003 server and not the Exchange 2010 admin group.
How can this be updated? We have to manually keep updating distribution groups to 2010 format when created in Quest ARS and we have all mailboxes over on Exchange 2010 now...