AD Manager Plus comes with the Bulk Contact Modification feature which simplifies the task of updating details for multiple contacts.
This section primarily deals with the following topics:
Highlights of bulk contact modification:
Acts as a shortcut to delete multiple Active Directory contact objects at one go.
Makes it easy to modify only a specific set of contact objects' attributes like address attributes, organization attributes and naming attributes.
Modifies contacts in bulk, in multiple OUs (you can exclude the child OUs if you do not wish to modify the contact objects located within them)