Automapper DTO to Entity Nested Mapping
===

I have entities: 

    public class Person
     {
       //properties
       public virtual State State { get; set; }
     }
    
     public class State
     {
           //properties
           public int StateId { get; set; }
           public string StateName { get; set; }
           public virtual Address Address{ get; set; }
     }

    public class Address
     {
           //properties
           public int AddressId { get; set; }
           public string City{ get; set; }
           public int PostalCode { get; set; }       
     }


And i have a flatten DTO called PersonDetails


    public class PersonDetails
     {
           //properties
           public string City { get; set; }
           public string StateName { get; set; }
           public int PostalCode { get; set; }       
     }

When i do the mapping it works but it creates a new State and Adress for the Person entity.
How would i use AutoMapper to map from `PersonDetails` to `PersonEntity` ?

Thanks in advanced.
