I have an x-files :-) with the address book. This is the thing:

A user deleted a contact from the address book. Ok, contact is gone on the address book. But, this user sends an email to ENTIRE address book. And this users, replies to this email saying that please, dont send email. Ok, my users recheck the address book and this users doesnt persists. But, exporting address book in NAB, and opening with notepad++, here is the contact previously deleted!!! And, here, the X-Files intro :-)

Note 2: exporting address book in CSV and importing from Excel, contact doesnt exists. Only when see NAB file with notepad++.

Someone knows what's happening?? Help!!!