OrderRepository Version 9

OldOrderRepo.cs

var cart = OrderRepository.Load<Cart>(PrincipalInfo.CurrentPrincipal.GetContactId(), Cart.DefaultName).FirstOrDefault();
if (cart == null)
{
  cart = OrderRepository.Create<Cart>(GetCommerceCustomerId(), Cart.DefaultName);
  cart.CustomerName = PrincipalInfo.CurrentPrincipal.Identity.Name;
  var orderReference = OrderRepository.Save(cart);
}

var price = PriceService.GetDefaultPrice(marketId,
        DateTime.UtcNow,
        new CatalogKey(new Guid(variation.ApplicationId), variation.Code),
        SiteContext.Current.Currency);
            
var lineItem = CreateLineItem(variation, quantity, price.UnitPrice.Amount);

var orderForm = cart.OrderForms.First();
orderForm.LineItems.Add(lineItem);
var index = orderForm.LineItems.IndexOf(lineItem);
cart.OrderForms.First().Shipments.First().AddLineItemIndex(index, lineItem.Quantity);
OrderRepository.Save(CurrentIOrderGroup);
//LineItems are cached so we need to load again
cart = OrderRepository.Load<Cart>(currentCustomerCommerceId, Cart.DefaultName).FirstOrDefault();
PromotionEngine.Run(cart);
// Save the updated promotions data
OrderRepository.Save(CurrentCart);
//LineItems are cached so we need to load again
cart = OrderRepository.Load<Cart>(currentCustomerCommerceId, Cart.DefaultName).FirstOrDefault();

Just checking. PrincipalInfo.CurrentPrincipal.GetContactId(), GetCommerceCustomerId() and currentCustomerCommerceId is the same value in the code above, right?

And, OrderRepository.Save(CurrentIOrderGroup); should be OrderRepository.Save(cart); or?