Replicating the edit function of _OrderDetails.Info.cshtml

I've created a custom view engine and made a copy of the Orders controller, and Edit and _OrderDetails.Info into my plugin in order to add a tab that will display data from plugin.

Using _OrderDetails.Info as the model, I made a form that can change from view to edit mode.

Now my problems are
1. when clicking on the Save button, the confirmation window doesn't come up

<button type="submit" name="btnSavePaymentDetails" id="btnSavePaymentDetails" class="btn btn-primary">
      @T("Admin.Orders.Fields.SavePaymentDetails")
</button>
@Html.ActionConfirmation("btnSaveOrderTotals")

2. I can't find where the values of the fields are bound to an instance of the Model and sent to the Controller

3. when clicking on the Save button, the correct action is called but I can't see the fields in the FormsCollection



I'm at a complete loss with this one.