Sometimes working with the js Serializer is easy, sometimes its not. When I attempt to serialize an object that is derived from a base, the serializer decided whether or not to include the type name. When its present, the type name is represented by a ___type attribute in the serialized json like this: {"d":{"__type":"Commerce.In... The missing type name is a problem if I intend to ship the object back into a web method that needs to deserialize the ......