I'm using 1.0.2005.1 (July 6)
Say I have an Employee entity and a Manager entitity. Employee has a relation with Manager through Employee.Manager_ID, and also a property Employee.Manager. If I set Employee.Manager_ID to a value, then set Employee.Manager to 'Nothing' then the Manager_ID field is not updated, as opposed to when I set the Employee.Manager property to a real entity object, in which case the Manager_ID field is updated.
Why is this? If I set Employee.Manager to 'Nothing' shouldn't Employee.Manager_ID become whatever translates into null when it hits the database?