All the contacts had been removed from my phone, but were still in my online yahoo account. No sync was taking place. Yahoo looked into it and fixed the sync problem on their side of the server. So during the last day or two I tried everything myself to sync, delete, add the account etc with no luck. So after speaking with Apple Tier support and several of you fine folks, nothing worked. So I contacted the Yahoo staff and within 1 day, click/boom it was fixed!
Originally Posted by Rockdog97
No information was released about what the server problem was, but it is now working and resolved.