When you create your NSManagedObject subclass from data model, XCode generates your class with all defined attributes and relationships, but doesn't include fetched properties.
As far as I remember it wasn't an issue in older versions of XCode. Sure, I can define my fetched property manually, like it was done by previous versions of XCode:
MySubclass.h
@property (nonatomic, strong) NSArray *fetchedProperty;
MySubclass.m
@dynamic fetchedProperty;
But if XCode stopped doing it, then maybe there is an alternative way to access fetched properties. I wonder why did they change class generating behaviour and how I suppose to access fetched properties now?