Convert address book from Snow Leopard to Mavericks

I'm trying to migrate an address book from a machine running Snow Leopard to one running Mavericks. The Snow Leopard machine no longer boots so I'm trying to restore from a Time Machine backup. I've tried the following recipe:

1. Remove ~/Library/Application Support/AddressBook/AddressBook-v22.abcddb

2. Copy all files from backup's Metadata folder into the Maverick's metadata folder

3. Restart Contacts

I don't see any new contacts but I do see the following files in the folder where the .abcddb file existed before:

ABAssistantChangelog.aclcddb

ABAssistantChangelog.aclcddb-shm

ABAssistantChangelog.aclcddb-wal

but no new AddressBook file.

# file ABAssistantChangelog.aclcddb

ABAssistantChangelog.aclcddb: SQLite 3.x database

I've also tried doing an import on Contacts but all files are greyed out.

It appears that there's a DB version change from SL to Mavericks.

How can I change the format so I can import all my contacts ?

Carlos

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