He comenzado a implementar esta solución.los atributos de vinculación incluyen y excluyen propiedades con objetos anidados de tipo complejo

Pero no funciona en absoluto.

La misma pregunta está aquíEnlace de modelo anidado con MVC3 en HttpPost

Pero no hay una respuesta concreta.

Modelo

[Bind(Include = "FirstName,MiddleName,LastName,Position,TruckTypeID,Direction,Organization,Objective,TimeStart,TimeEnd")]
public partial class UserRequestRegisterModel
{
    [DisplayName("Имя")]
    [Required]
    public string FirstName { get; set; }

    [DisplayName("Фамилия")]
    [Required]
    public string MiddleName { get; set; }

    [DisplayName("Отчество")]
    [Required]
    public string LastName { get; set; }

    [DisplayName("Должность")]
    [Required]
    public string Position { get; set; }

    [DisplayName("Тип транспорта")]
    [Required]
    public System.Guid TruckTypeID { get; set; }

    [DisplayName("Направление")]
    [Required]
    public string Direction { get; set; }

    [DisplayName("Организация")]
    [Required]
    public string Organization { get; set; }

    [DisplayName("Цель")]
    [Required]
    public string Objective { get; set; }

    [DisplayName("Время убытия")]
    [Required]
    // [DataType(DataType.Date)]
    [DisplayFormat(DataFormatString = "{0:dd/MM/yyyy  HH:mm}", ApplyFormatInEditMode = true)]
    public System.DateTime TimeStart { get; set; }

    [DisplayName("Время прибытия")]
    [Required]
    // [DataType(DataType.Date)]
    [DisplayFormat(DataFormatString = "{0:dd/MM/yyyy HH:mm}", ApplyFormatInEditMode = true)]
    public Nullable<System.DateTime> TimeEnd { get; set; }        
}


[Bind(Include = "UserRequest")]
public partial class RequestUserModel
{
    public List<UserRequestViewItem> UserRequestViewItems { get; set; }
    public UserRequestRegisterModel UserRequest { get; set; }

    public RequestUserModel()
    {
        UserRequestViewItems = new List<UserRequestViewItem>();
        UserRequest = new UserRequestRegisterModel();
    }
}

Controlador

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Index([Bind(Include = "FirstName,MiddleName,LastName,Position,TruckTypeID,Direction,Organization,Objective,TimeStart,TimeEnd")] RequestUserModel userRequest)
//public ActionResult Index(RequestUserModel userRequest)
{
    // !  userRequest.UserRequest is empty  !
    //...
}