Sync Problem Address Book iCloud - OSX (2 different Mac's) Yosemite

Hi guys,

i've browsed more or less all topic with address book sync problem.. but none of them seems to be the same problem I do have.

On two different Mac (both with Yosemite), i would like to sync my iCloud Address book.

But always on one of those to macs the addresses doesn't appear!

on my iphone - OK

on my ipad - OK

Macbook Air - OK

Macbook pro - not shown!

So, i went through all the helps in the different forums. Starting with exporting the cards from iCloud.com and reimport them into the address book, to delete the files in library/addressbook.. none of them works..

if I import all cards on the macbook air, then they are not shown on the macbook pro. or if I do the same procedure on the macbook pro, they won't appear on the macbook air!.. but on iphone and ipad the always there and are OK!

Does anyone has the same problem? Is there a solve in sight?

Thanks to every comment

padi.gut