CoreData Holds data after delete - ios

Question

I using a Core Data with 2 entities One is my archive, have reference for image, name and NSNumber the second Entity is mi numeric balance.
In the Archive view i can load Archive entity in to a UITable View, if i tap on my cell i have the perfect detail and my button to set the Card.
In the detail I've the Delete button, this have a function to delete a single card and in to Balance entity change the numeric value.
If i try to delete is working well and the Balance load good the new value, but is i add new card, my balance add a new value plus the last value erased:
Start App add my card with Name, Image and value (10), Balance show 1 card, total 10, is ok.
Go to my archive select my card and Delete, now i have empty archive, and my Balance showing 0 card and 0 value, now if i add other card exaple value 10, my balance sowing 2card and 20value.
this is the code using to delete:
- (IBAction)delete:(id)sender {
NSError *error;
NSManagedObjectContext *context = [self managedObjectContext];
[context deleteObject:loadA[_currentRecord]];
//image remover from documents folder//
NSString *imageRemover = [[self docsDir]stringByAppendingPathComponent:nomeSc.text];
[[NSFileManager defaultManager] removeItemAtPath:[NSString stringWithFormat:#"%#.jpg", imageRemover] error:&error];
//----------------------------------//
if (![context save:&error]){
NSLog(#"Save Error, please retry: %#", [error localizedDescription]);
}
[self refreshBalance];
_currentRecord =-1;
}
- (void)refreshBalance:(id)sender {
NSManagedObjectContext *context = [self managedObjectContext];
if (_currentRecord <= -1) {
modifyA = loadA[_currentRecord];
modifyB = loadB[currentBalance];
}
int oldBet = [betOld.text intValue];
int cardBetting = [modifyB.totalCards intValue];
int amauntBet = [blDetail[0] intValue];
modifyB.totBet = [NSNumber numberWithInteger:amauntBet - oldBet];
modifyB.totCards = [NSNumber numberWithInt:cardBetting -1];
}
NSError *error;
if (![context save:&error]) {
NSLog(#"Errore durante il salvataggio: %#", [error localizedDescription]);
}
_currentRecord = -1;
_currentBalance = -1;
[self.navigationController popViewControllerAnimated:YES];
}
**********THIS IS A FUNCTION TO SAVE*****************
- (IBAction)onSave:(id)sender{
NSString* documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *imageName = self.name.text;
NSString* foofile = [documentsPath stringByAppendingPathComponent:[NSString stringWithFormat:#"%#.jpg", imageName]];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:foofile];
if (fileExists == YES){
NSString *titolo = #"Warning";
NSString *messaggio = [NSString stringWithFormat:#"Your name ( %# ) exist, please changeit!", imageName];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
message:message
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
} else
if (nomeGiocata.text.length == 0 || importoGiocato.text.length == 0 ) {
NSString *titolo = #"Warning";
NSString *messaggio = #"There are empty fileds!";
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
message:message
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
} else {
NSString *imageName = self.nomeGiocata.text;
NSArray * paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString * basePath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;
UIImage * imageToSave = self.imageViewPick.image;
NSData * binaryImageData = UIImageJPEGRepresentation(imageToSave, 1.0);
[binaryImageData writeToFile:[basePath stringByAppendingPathComponent:[NSString stringWithFormat:#"%#.jpg", imageName]] atomically:YES];
NSManagedObjectContext *context = [self managedObjectContext];
[self.managedObjectContext setMergePolicy:NSMergeByPropertyObjectTrumpMergePolicy];
newScheda = [NSEntityDescription
insertNewObjectForEntityForName:#"Archive"
inManagedObjectContext:context];
newScheda.immagine = [NSString stringWithFormat:#"%#.jpg", imageName];
newScheda.nome = nomeGiocata.text;
int bet = [importoGiocato.text intValue];
newScheda.giocata = [NSNumber numberWithInt:giocata];
addSched = balance[currentRecord];
int insert = [addSched.totScommesso intValue];
addSched.totScommesso = [NSNumber numberWithInt:insert + bet];
int aggiungiSched = [addSched.totSchedGiocate intValue];
addSched.totSchedGiocate = [NSNumber numberWithInt:aggiungiSched + 1];
int balance = [addSched.totBilancio intValue];
addSched.totBilancio = [NSNumber numberWithInt:balance + giocata];
NSError *error;
if (![context save:&error]) {
NSLog(#"Error during the process: %#", [error localizedDescription]);
}
NSString *titolo = #“MyApp";
NSString *messaggio = #"Saved!";
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
message:message
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
}
[self clearFields];
}
How can empty a cache when i delete my Record? or have other idea?