CardBook is an address book and contact management addon for the Thunderbird email client. It does not replace Thunderbird's native address book (NAB). They are separate and independent from each other and can be used at the same time.
There is no hot-sync or half-automatic sync between CardBook and NAB. You can import address books and contacts from NAB to CardBook, but not vice versa. While it is possible to export contacts/address books from CardBook to the filesystem and import from filesystem back to NAB, the general advice is to use CardBook as your sole address book manager.
CardBook can sync your address books with external address book servers, enabling you to sync contacts between all your devices (mobile phones, notebooks and PCs).
import contacts from NAB into CardBook
Don't try to use the import function as a "sync device" to keep CardBook up-to-date with the NAB. Use the import function only once and then stop using the NAB.
hide Thunderbird's native address book:
We recommend using CardBook as your sole address book manager. Ignore the NAB after installing CardBook, remove its toolbar button and use the CardBook button only.
avoid having multiple copies of your contacts
Once you are familiar with CardBook
sure that you won't go back to the NAB again
have VERIFIED that all data was imported correctly
... you can delete the contacts stored in the NAB.
the built-in Thunderbird address books: personal address book, collected addresses: It is not possible to delete them. Keep them but delete all their contacts. A copy of each contact has been stored in CardBook at import.
collecting outgoing addresses:
In Thunderbird prefs > composition > disableautomatically add outgoing e-mail addresses to my: <ADDRESS BOOK>. This ensures that no new contacts will be created in the NAB.
If you still want to use this feature, enable it via: CardBook prefs > email tab >collect outgoing email