ExchangePro: An error occurred while updating a user object after the move operation. (4297829)

Issue

Warning: Unable to update Active Directory information for the source mailbox at the end of the move. Error details: An error occurred while updating a user object after the move operation. -- Active Directory operation failed on src1.int

Solution

99% of the time, this is because inheritance is disabled on the source object. The Exchange Server account (which is the one actually moving the data) is unable to modify the attributes on the source user.

Check the following:

ADUC Properties on the User Security Advanced is the box checked?