Thank you Ira, joe & diana for your input.
I managed to solve the problem yesterday like this:
Open server's mail (PRIMUS by name) tools> address book> tools> export> window showing abook.csv> save file to downloads. Open apple's address book> file> import> text file> downloads> abook.csv (click)> open> imported!!!
Where there is a will, there is a way...thank God.
jaybass




OS 13.6.6 iMac (Retina 5K, 27", 2017, 3.4 GHz Intel Core i5, 24 GB RAM, 2400 MHz DDR4. SuperDuper. 1 TB Lacie HD