NEVER use HTML Helpers for Hidden fields (Asp.Net MVC)

 This is the second time around when I ran into this problem - Hidden fields on a view after rendering it back from the controller after POST, does not update the hidden fields with latest values. The reason, I found online is that the view rendering engine (Razor, in this case) first looks at the values being posted for the Helper fields and uses them rather than the ones, that were returned from the controller after the POST. What is the reason behind this design - I dont know. 

Example:
So, if you have a view like this - 

<div class="span9">
        @using (Html.BeginForm("Payment", "Entity", FormMethod.Post))
        { 
            @Html.ValidationSummary("Please provide the required fields")
            @Html.HiddenFor(m => m.EntityId)

            .....

Instead do: 

 <div class="span9">
        @using (Html.BeginForm("Payment", "Entity", FormMethod.Post))
        { 
            @Html.ValidationSummary("Please provide the required fields")
            <input type="hidden" name="EntityId" id="EntityId" value="@Model.EntityId" />

Hope you save some time.