title: How to update a NSManagedObject or NSManagedObjectContext without notifying a NSFetchedResultsController
body: <p>I have a Managed Object Context with a few <code>NSFetchedResultsController</code>s listening to different entities throughout my app, working perfectly for the most part.</p>
  
  <p>I'm at a loss on how to solve the following scenario though: I am setting a relation on an entity when the user clicks a button in the entity's corresponding table view cell. This currently causes the entity to change and the FRC to tell the tableview to redraw the entire cell, rendering the button in it's default Control State.</p>
  
  <p><strong>Is there a way to change an entity without it being noticed by one of my FRCs?</strong></p>
  
  <p>I would like to be able to have this effect on only specific updates (controlled by myself, such as setting or removing a relation), compared to disabling the whole FRC for a while, as to not loose the functionality for other updates that might be happening at the same time.</p>
  
  <p>Thanks!</p>