So you have two options here:
The first one is to change the Action method to the following:
[HttpPost]
public ActionResult RemoveItemEntry(ItemViewModel data)
{
// Perform logic to remove the item from the registration
// then return the PartialView with updated model
if (Request.IsAjaxRequest())
{
return PartialView("~/Views/Partials/ItemEntries.cshtml", model);
}
else
{
// return the initial View not the parial fie
}
}
The second option is to replace you Ajax form with a normal that call a Action method that return the initial View. Then you'll have to write a jQuery code that make an AJAX call when the form is submitted, but it'll make the AJAX call to a second method that will return the PartialView.