Why won't icloud merge or backup all my contacts?

Why won't icloud copy all my contacts in Outlook?  Some are backed up and merged some aren't!

I had similar problem.  This worked for me, hope it helps:
In Mail
Open Preferences>Accounts
Select Advanced tab for the iCloud account
Set Authentication to 'Apple Token'
The Password field on the Account Info tab should now have disappeared.
Mail no longer asks for password every time it launches.
(now i just have to solve why mail launches an upgrade dialogue every single time it opens and then proceeds to try and re-download about 25,000 emails...)
Why the Authentication method suddenly switched when I upgraded ML to Mav who knows, but it seems incredible that no-one at Apple came across this, it's one of their prime apps.
In fact, since upgrading to Mav I've had numerous system wide problems with my iCloud accounts not connecting properly or stably - what on earth are the thousands of engineers at Apple doing?

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