Nokia Sync will be fully discontinued on December 5, 2014. After 5 December 2014, you will not be able to access your data through the Nokia Sync service. It is strongly encouraged to export and/or migrate your data from the service before this date.
I have my contacts still in Nokia Sync. Beginning today, Nokia Sync users have 2 options
Option 1: Export
Option 2: Migrate
In the interest of information privacy, all data that is stored in Nokia Sync will be destroyed following termination of the Nokia Sync service.
I chose to just migrate mine. You can do both if you wish.