How to properly trim object graph brought in by NSFetchedResultsController?

Question

Without reference cycles NSFetchedResultsController can turn its managed objects into fault properly when they are not needed. But with reference cycles, it not, so

Answer 1

I think you should simply avoid strong reference cycles. Usually, there is no compelling reason to have to deal with the problem you describe.

For a detailed discussion, see Apple's Encapsulating Data chapter of the Programming with Objective-C guide where you will find a section titled Avoid Strong Reference Cycles.