iOS Game Center Group
app-store-connect, game-center, ios, objective-c
Solution
Okay, it works. You can move existing leaderboard to Group without performing any changes in application.
Hope that I do not break NDA, did not find any information about it, except this link - http://david-smith.org/blog/2012/06/18/ios-6-nda-cheatsheet/
Problem
When I use `Group Leaderboard` in `Game Center` do I need to use "grp" prefix in id's enumerated in my app? In other words if I will set up my existing game to use `Group Leaderboard` do I need to add "grp" prefix to each id in my app?