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After days of research and re-coding I am pretty much stumped. My goal is to get a test app running with a single tableview populated from two separate fetchedResultControllers. I have a series of items on a shopping list, each with a department and a boolean 'collected' flag. Uncollected items should be listed by department, followed by a single section containing all collected items (regardless of department). As a user checks off uncollected items, they should move down to the 'collected' section. If s/he un-checks a collected item, it should move back into its correct department. To achieve the first part (uncollected items), I set up a simple fetchedResultsController that fetches all items where collected = NO, and sectioned the results by department: - (NSFetchedResultsController *)firstFRC { // Set up the fetched results controller if needed. if (firstFRC == nil) { // Create the fetch request for the entity. NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; // fetch items NSEntityDescription *entity = [NSEntityDescription entityForName:@"Item" inManagedObjectContext:managedObjectContext]; [fetchRequest setEntity:entity]; // only if uncollected NSPredicate *predicate = [NSPredicate predicateWithFormat:@"(collected = NO)"]; [fetchRequest setPredicate:predicate]; // sort by name NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"name" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [fetchRequest setSortDescriptors:sortDescriptors]; // fetch results, sectioned by department NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:managedObje

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