iOS Game Center Group

Question

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?

Answer 1

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/