HT2486: Mac Basics: Address BookLearn about Mac Basics: Address Book
Currently Being ModeratedNov 20, 2012 6:35 AM (in response to nanmacmsu)
The addressbook can be exported to vCard if you want a crossplatform compatible backup that can always be reused. Just use the vCard export functionality that is built in after selecting all the addresses you wish to export. Separate the vCards into their own folders that you wish grouped together, so you can rebuild it. You can also backup the Users -> yourname -> Library -> Application Support -> Addressbook but then that's only reusable in Apple's Addressbook versions the same or newer than the one they were created in.