Implementing Domain Driven Design with Devforce

   We are trying to Implement DDD with Devforce 2012.
So we have several Domain Models (e.g. Customer, Sales, Finance) and several EntityManagers for each Domain Model.

Now we are facing the situation, where we need to update one Manager from within another manager with the EntityManagerDelegate SaveInterceptor. 

What we are trying to achive, is to seperate out the related Business rules and Validations into each Manager and Model, but at the Save Interceptor, we need to update more than one EntityManager (e.g. if a customer is created, the Sale Manager need to create some empty tables with the related customer). This has to be a transactional Save.

Here is a little Sample:

   public class CustomerContextDelegates : EntityManagerDelegate<CustomerContext>
    {

        public override void OnSaved(
            CustomerContext context, 
            EntitySavedEventArgs args)
        {
            if (args.CompletedSuccessfully) EventFns.Publish(new SavedMessage(args.Entities));
        }

        public override void OnSaving(
            CustomerContext context, 
            EntitySavingEventArgs args)
        {
            if (args.Entities.OfType<Customer>().Any())
                {
                    var sut = args.Entities.OfType<Customer>().Select(x => x).FirstOrDefault();       

                    var businessProcess = new CreateNewCustomer(sut, context, args);

//TODO: Here we need to create a SalesContext Manager and ensure, that both managers get saved transactional.
}
}

Is there a way to create a new EntityManager in the SaveInterceptor and ensure, that both EntityManagers gets saved in an Transaction?

(e.g. only insert a customer in the CustomerEntityManager if the SalesEntityManager has created the corresponding empty Sales entitys)