No error is shown but when searching by the desired AD attribute (EmployeeType) in the Export Archive Wizard no results are found.
See the example below for the Employee-Type AD attribute:
The column EmployeeType under ExchangeMailboxEntry table is also not updated:
The AD attribute EmployeeType is not replicated to the Global Catalog by default. When the provisioning task runs to acquire the User attributes it uses LDAP query to get the attributes from GC, since it's not in the GC it is not pulled.
Update the EmployeeType properties in Active Directory Schema to Replicate this attribute to the Global Catalog
1.On the GC Server run the line below from the run command:
Regsvr32 schmmgmt.dll
and click OK
2.Open Microsoft MMC Console, and from the MMC Console open Active Directory Schema
3. Under Attributes find the Attribute you need to add and double click on it
4. In the attributes screen, Properties tick the Replicate this attribute to the Global Cataog
5. Once done make sure the tick box is ticked
6. Close the MMC console and RUN the provisioning task.
Note: It may take some time for the replication of the attribute to update in the Global Catalog
Now the ExchangeMailboxEntry is updated properly