Objective-C - CoreData and TableView refresh

Question

Hi,

I have one problem. I have managed to read/write/delete records in CoreData. But now I am dealing with one problem.

In my app delegate I create TabBarController and add some NavigationControllers in it. In one taleView in navController I want delete record and when I switch to another tab I want see that record there. I can do that but you have to relaunch app to see changes.

edit:

I have managed to pass data to second VC (I have two tables, each records for one tableView). In one I delete record and that one is saved to second table. But when I open second tab I can see only old records.

I have tried to breakpoint every step, and I am sure that I have e.g. 4 objects in NSMutableArray but only 3 tableCells. I tried to reloadData on table but without change.