The job title and the office location of a contact are not included in the compact delta file in Microsoft Office Communicator 2007 R2 by default.
To fix this problem, install the following cumulative update:
2291453 Description of the cumulative update package for Communicator 2007 R2: November 2010
After you install the update, the environment administrator must change the Abserver.exe.config address book configuration file that is located in the C:\ProgramFiles\Microsoft Communications Server 2007 R2\Server\Core folder. To do this, follow these steps:
Open the Abserver.exe.config address book configuration file.
Delete the following settings in the address book configuration file, or convert the settings to comments: