NSFetchedResultsController didChangeObject is using wrong indexPath after sorting

ShortList.m

- (void)sortShortListUsingSelectedSortIndex{
    NSManagedObjectContext *context = [[AppDelegateiPad ad] managedObjectContext];
    
    NSFetchRequest *shortListRequest = [[NSFetchRequest alloc] init];
    [shortListRequest setEntity:[NSEntityDescription entityForName:@"Hip" inManagedObjectContext:context]];
    [shortListRequest setPredicate:[NSPredicate predicateWithFormat:@"%@ IN shortLists", self.shortList]];
    [NSFetchedResultsController deleteCacheWithName:nil];
    if(selectedSortIndex == 0){
        [shortListRequest setSortDescriptors:[NSArray arrayWithObjects:[NSSortDescriptor sortDescriptorWithKey:@"number" ascending:YES], nil]];
    }else{
        [shortListRequest setSortDescriptors:[NSSortDescriptor sortDescriptorWithKey:@"name" ascending:YES],nil]];
    }
    
    fetchRequestController = [[NSFetchedResultsController alloc] initWithFetchRequest:shortListRequest
                                                                 managedObjectContext:context 
                                                                   sectionNameKeyPath:nil 
                                                                            cacheName:nil];
    [shortListRequest release];
    fetchRequestController.delegate = self;
    NSError *error;
    [fetchRequestController performFetch:&error];
    [tableView reloadData];
    }

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
	
	CustomTableViewCell *cell = (CustomTableViewCell*)[hipsTableView dequeueReusableCellWithIdentifier:[ShortListHipTableViewCell reuseIdentifier]];
	
	if (!cell)
		cell = [CustomTableViewCell cell];
	
    Hip *hip = (Hip *)[fetchRequestController objectAtIndexPath:indexPath];
	
	[cell setSelectionStyle:UITableViewCellSelectionStyleBlue];
	[cell setShowsReorderControl:NO];
	cell.hipNumberLabel.text = [NSString stringWithFormat:@"%d",hip.hipDisplay];

	return cell;
    }

- (void)controllerWillChangeContent:(NSFetchedResultsController *)controller {
    [tableView beginUpdates];
}

- (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject
	   atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type
	  newIndexPath:(NSIndexPath *)newIndexPath {
    switch(type) {
			
        case NSFetchedResultsChangeInsert:
            [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath]
							 withRowAnimation:UITableViewRowAnimationFade];
            break;
			
        case NSFetchedResultsChangeDelete:
            [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
							 withRowAnimation:UITableViewRowAnimationFade];
            break;
			
        case NSFetchedResultsChangeUpdate: 
			break;
			
        case NSFetchedResultsChangeMove:
            break;
    }
}

- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller {
    [tableView endUpdates];
	[[self.toolbarItems objectAtIndex:0] setEnabled:([[fetchRequestController fetchedObjects] count] > 0)];
}