Years ago when I got my first iPhone, AT&T transferred all of the contacts from my old phone. My old phone didn't have a birthday field in the contacts. Instead of leaving the field empty on the iPhone, AT&T's system set them all to Jan 1, 2000.
Is there a way to update these with a script? Export them to a CSV, find-and-replace, and reimport?
Update - This is what my Contacts app looks like. The middle section is an Exchange server, which contains Contacts. However, those contacts appear unrelated to Exchange. The Exchange directory is the "All Work" group above it, and the "Work Global Address List" below.
Using AppleScript, "Address Book" is automatically changed to "Contacts" and only those 3 contacts from the Contacts subgroup above are selected:
tell application "Address Book"` set thePeople to every person repeat with thePerson in thePeople return the name of thePerson end repeat end tell