Before, when migrating to Exchange 2010 from Exchange 2003, you may be carrying over several mail-enabled, non-universal groups. These groups will still function, but the administration of these objects within the Exchange tools will be limited. In addition, several distribution group features provided by Exchange 2010 or 2013 will not be enabled for a group until it has been upgraded. If you somehow haven't upgraded your groups before, it's about time now. That's why this recipe is included in this book. This recipe covers the process of converting and upgrading these groups within the Exchange Management Shell.