ANSWER ID:33066

From OS In OS X 10.9 (Mavericks), Apple removed Sync Services support which AccountEdge uses to sync with Apple's Contacts app (aka Address Book). Therefore, Address Book sync is not supported in AccountEdge running on OS X 10.9 or later.

For information on syncing cards in OS X 10.8 or earlier, see the AccountEdge help (Australia | New Zealand).