在新视图中使用时，ViewModel不绑定

I am able to pass a view model initially on a form on my index.cshtml page to an editor template page. On the index page I have a submit button that post the form results (radio button groups in the editor template) back to the controller and within the HttpPost method its passing this model to a partial view which is displayed in a modal popup. All this does is show the form elements that were selected but it disables the radio buttons to the user. From here the user can either go back (close the window) or confirm the form results. When the user clicks the confirm button it should pass the viewmodel back to the controller to another HttpPost method which will then process the form results and return the final confirmation view. But when I try to pass the viewmodel back to the controller from the modal popup it does not keep the binding. I tried making sure all were binded through Hidden inputs but I must be missing something somewhere. Maybe I am going about this the wrong way. I just need to basically keep the viewmodel binding from the initial post and be able to process that after the user confirms the selection from the modal popup. What would be the best way to accomplish this without having to put a session hack in there?I am able to pass a view model initially on a f