Two archives address book; can they overlap?

[Mikebuzzsaw]

My current address book has roughly 300 contacts. I have an old archived address that has roughly 200 contacts, but some contacts have extra information (ie. bday, notes, etc) that my current address book does not contain.


Is there anyway to upload the old archive address book and overlap the duplicate contacts and not deleting any of my current contacts?

 

[JediMeister]

Here's how I think this would work theoretically. Restore each archive one at a time. Select all the card entries for one archive, export out as single vCard file. Reimporting the two resulting vCard files should bring everything back into one single database, but you may end up with 500 contacts, I'm not sure it'll merge the data automatically.