Dealing with editable items in a filtered UITable with an NSMutableArray copy

Question

I have a UITable with a datasource that is set to a 'copy' of the original data. I use this copy to displayed filtered results (either 'All' or only those that are 'checked' with a UISwitch in each row). My logic for doing the filtering is here:

-(void)filterItems {
[tableData removeAllObjects];
if (checkedOrNotSwitch.selectedSegmentIndex == 0) {
    [tableData addObjectsFromArray:self.defaultChecklistItemsArray];
} else {
    for (NSMutableDictionary *sectionDict in self.defaultChecklistItemsArray) {
        NSMutableArray *newItemsArray = [[NSMutableArray alloc] init];
        [newItemsArray removeAllObjects];
        for (NSMutableDictionary *itemDict in [sectionDict objectForKey:@"categoryItems"]) {
            if ([[itemDict objectForKey:@"isComplete"] boolValue]) {
                [newItemsArray addObject:itemDict];
            }
        }
        if ([newItemsArray count] > 0) {
            NSMutableDictionary *newSectionDict = [[NSMutableDictionary alloc] initWithDictionary:sectionDict];
            [newSectionDict setObject:newItemsArray forKey:@"categoryItems"];
            [tableData addObject:newSectionDict];
            [newSectionDict release];
        }
    }
}
[checklistTable reloadData];

}

The filtering itself now works correctly. In my custom cell, each row has a UISwitch. The switch runs this function when its changed:

-(IBAction) switchValueChanged{
NSIndexPath *indexPath = [(UITableView *)self.superview indexPathForCell: self];
[self.parentController updateCompletedStatusAtIndexPath:indexPath toStatus:isCompleted.on];

}

The function above is in the class for the tableviewcell itself. The function I call in the superview is this:

-(void)updateCompletedStatusAtIndexPath:(NSIndexPath *)indexPath toStatus:(BOOL)status{
NSUInteger section = [indexPath section];
NSUInteger row = [indexPath row];
NSMutableDictionary *currentsection = [[NSMutableDictionary alloc] initWithDictionary:[tableData objectAtIndex:section]];
NSMutableArray *itemsArray = [[NSMutableArray alloc] initWithArray:[currentsection objectForKey:@"categoryItems"] copyItems:YES];
NSMutableDictionary *tempDict = [[NSMutableDictionary alloc] initWithDictionary:[itemsArray objectAtIndex:row]];
NSLog(@"BOOL = %@\n", (status ? @"YES" : @"NO"));
[tempDict setValue:[NSNumber numberWithBool:status] forKey:@"isComplete"];
[itemsArray replaceObjectAtIndex:row withObject:tempDict];
[currentsection setValue:itemsArray forKey:@"categoryItems"];
[tableData replaceObjectAtIndex:section withObject:currentsection];

[tempDict release];
[itemsArray release];
[currentsection release];

[checklistTable reloadData];

}

Before I implemented the filtering and used the logic above on self.defaultChecklistItemsArray directly, it worked and saved the data when the switch was flipped.

Now when I first enter the app, it loads the array of data from nsuserdefaults. I navigate to the view with the table and it displays the data correctly there with the UISwitches all in the correct position given the data (some on, some off). When I tap one of the switches, then click the segmentedcontrol that does the filtering, the data reverts back to the state it was loaded in, implying that the flipping of the switch did not actually effect the data at all (even though I don't think I did a deep copy anywhere here so I figured it should be doing the right thing). Any suggestions?