@ Html.HiddenFor (x => x.Id) Doesn't work, but <input type = "hidden" value = @ Model.Id> does. What for?

I am really very confused now because I thought that @Html.HiddenFor(x => x.Id)

and <input id="Id" name="Id" type="hidden" value=@Model.Id>

are the same thing, except for some of the advantages of the first option. But if I use the first option and look at the generated html input value, always = 1, and if I use the second option, everything is fine.

So here is my model:

public class CheckListViewModel
{
    public int Id { get; set; }
    public DateTime CheckTime { get; set; }
    public List<QuestionViewModel> Questions { get; set; }
}

      

        
        
        
      

    

My view code:

@using System.Diagnostics
@using WebCheckList.Models
@model  CheckListViewModel
@using (Html.BeginForm("Submit", "CheckList", new {ReturnUrl = ViewBag.ReturnUrl}, FormMethod.Post, new {@class = "form-horizontal", role = "form"}))
{
    //this one does not work. It generates the same html code as 
    // a line below it, only difference is that its value is always = 1
    @Html.HiddenFor(x => x.Id); 
    //When I change it to this - everything works.
    <input id="Id" name="Id" type="hidden" value=@Model.Id>

    ...

      

        
        
        
      

    

The MVC version is 5.2.0.0 Please tell me what I did wrong and why the @Html helper is not working as expected?

UPDATE:

The contoller looks like this:

public ActionResult Questions(int  id)
{
    return Create(new CheckList(), id);
}

public ActionResult Create(CheckList checkList, int checkListsTypeID = 2)
{
    _db.CheckLists.Add(checkList);
    _db.SaveChanges();

    var checkListViewModel = new CheckListViewModel {Questions = questions, Id = checkList.ID, CheckTime = checkList.CheckTime};
    return View("Details", checkListViewModel);
}

      

        
        
        
      

    

Is my problem because I am returning one method result from another?