Unable to refresh UITableView with modified data - objective-c

Question

I have a iPad app, using XCode 4.5, Storyboards, Core Data and iOS 6. I select a row, make a change to the contents of the record (which is successful), but the row doesn't change. I have tried to refresh the UITableView, but cellForRowAtIndexPath is never called. I have searched SO and Google to no avail; I don't see what's wrong. Can someone please tell me how to fix this? (with an explanation of what I'm doing wrong for the next time?)
Here is the pertinent code:
- (IBAction)btnModify:(UIButton *)sender {
//NSLog(#"btnModify clicked");
NSManagedObjectContext *localContext = [NSManagedObjectContext MR_contextForCurrentThread];
// find client by primary telephone number
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"aClientPrimaryPhone ==[c] %#", cvPrimaryPhone.text];
ClientInfo *clientDataFound = [ClientInfo MR_findFirstWithPredicate:predicate inContext:localContext];
if(clientDataFound) {
clientDataFound.aClientName = cvCustName.text; // now start moving the data
clientDataFound.aClientAddr1 = cvAddress1.text;
clientDataFound.aClientAddr2 = cvAddress2.text;
clientDataFound.aClientCity = cvContactCity.text;
clientDataFound.aClientPostalCode = cvPostalCode.text;
clientDataFound.aClientCellPhone = cvCellPhone.text;
clientDataFound.aClientPrimaryPhone = cvPrimaryPhone.text;
clientDataFound.aClientEMail = cvPersonalEmail.text;
clientDataFound.aClientNotes = cvNotes.text;
[localContext MR_saveNestedContexts];
[self reloadClientList];
}
}
-(void) reloadClientList {
//Init Array to hold TableView Data
tableDataArray = [NSMutableArray new];
[tableDataArray addObjectsFromArray:[ClientInfo findAll]]; // Load
[self.clientList reloadData];
}
and this is ClientInfo.m
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
#interface ClientInfo : NSManagedObject
#property (nonatomic, retain) NSString * aClientAddr1;
#property (nonatomic, retain) NSString * aClientAddr2;
#property (nonatomic, retain) NSString * aClientCellPhone;
#property (nonatomic, retain) NSString * aClientCity;
#property (nonatomic, retain) NSString * aClientEMail;
#property (nonatomic, retain) NSData * aClientImage;
#property (nonatomic, retain) NSString * aClientName;
#property (nonatomic, retain) NSString * aClientNotes;
#property (nonatomic, retain) NSString * aClientPostalCode;
#property (nonatomic, retain) NSString * aClientPrimaryPhone;
#end

Answer 1

I found it... my "clientList" was NOT connected to the object... don't know how I missed that one!

Answer 2

There are a few reasons I can think of:
Your table view reference clientList is nil. (not connected)
Your table view's DataSource & Delegate is not set (Actually I'm not sure if it compiles when DataSource is not set)
Your table view is a subclass of UITableView and in that subclass reloadData method is overridden.