In many ways, DAMO works just a DWA works with regard to Contacts. If the contacts exist in the mail file’s $Contacts view, then those contacts will be displayed in both DWA and DAMO.
As I’m sure you know, if there is a Notes client involved, then the “Synchronize Address Book” in the Notes Inbox folder needs to be run to synchronize with the $Contacts view and the local names.nsf of the Notes installation.
Both DWA & DAMO pull directly from the $Contacts view in the server based mail file.