Umbrella is making changes in how Active Directory users, groups and computers are displayed in the Umbrella policy wizard as well as in reports.
For AD Users, the Display Name (Common Name) will be shown along with the User Principal Name (instead of the sAMAccountName being displayed earlier).
For AD computers, the full computer name will be displayed (computer name suffixed with the domain name).
AD groups will be displayed as Domain\Group Name.
These changes will apply to these AD entities as they sync to Umbrella; so for a certain period of time, you may see some AD users displayed with the sAMAccountName and other AD users displayed with the User Principal Name. This will not have any functional impact on AD attribution for DNS requests.