The CCK Wizard is being discontinued. It’s replacement is CCK2.
CCK2 provides all the functionality of the CCK Wizard and more, including support for AutoConfig and a better user interface.
As far as migration goes, the CCK2 should automatically migrate your existing CCK Wizard settings. CCK2 and CCK Wizard can coexist, so you won’t lose any data.
If you found the CCK Wizard useful and plan to use CCK2, I hope you’ll consider buying premium support. It ensures I am able to continue developing tools to make the enterprise deployment of Firefox easier.
The CCK Wizard will be removed from AMO on Dec 31, 2014.