How to merge separate Mac Contacts files?
I've been searching for instructions on how to merge into one 2 separate Contacts files from 2 different Macs. One is a "Personal" Contacts file from a home machine - and the 2nd is a "Work" Contacts file from a work Mac - I recently left that company but backed up my Contacts. Each file has hundreds of contacts. I'd now like to merge the files together, but when I try to do an Import of the "Work" file into the "Personal" file, I get prompted that it will overwrite the Personal file. Don't want that. I can find lots of instructions on how to merge 2 individual contacts together, but not 2 files, each with multiple contacts. I'm not worried about weeding out duplicates. Any advice would be appreciated or pointers to good sources of instructions.