Create Entity with Child Still Fires Lazy Load on Child Collection

I have a standard Parent Child Entity setup, let's say: Order and OrderDetail. I use the Create method pattern shown in the Model Explorer for creating entities.

When I create an Order, I create a blank OrderDetail entity to go in it. This is then shown in my grid. When that OrderDetail is bound to the grid, the EntityManager fires a lazy load query back to the server trying to pull the OrderDetails entities for Order ID -100. How do I turn this off? At this point, there are NO OrderDetails in the database and this query is completely pointless. Is there a "Loaded" property or some such that I can set to suppress it?

Thanks, Simon

Here's the code for the Create methods I am using:

public partial class Order
{
     public static Order Create(User user)
     {
          InitManager();
          Order item = Manager.CreateEntity<Order>();
          GetATemporaryKey(item);
          AddToManager(item);
          item.InitializeChildren(user);
          return item;
     }

     protected override void InitializeChildren(User user)
     {
          OrderDetail.Create(this, user);
     }
}

public partial class OrderDetail
{
     public static OrderDetail Create(Order order, User user)
     {
          InitManager();
          OrderDetail item = Manager.CreateEntity<OrderDetail>();
          GetATemporaryKey(item);
          AddToManager(item);
          item.Order = order;
          return item;
     }
}

I am just a fountain of bugs and features, aren't I?
I'll see if I can implement this in a way that will handle our entities. Thanks Kim!