I'm using the template found in Umbraco\PartialViewMacros\Templates\EditProfile.cshtml to let members edit their properties, also the custom properties I've added to the member object. This is the code in EditProfile:

@for (var i = 0; i < profileModel.MemberProperties.Count; i++)
 {
    @Html.LabelFor(m => profileModel.MemberProperties[i].Value, profileModel.MemberProperties[i].Name)
    @Html.EditorFor(m => profileModel.MemberProperties[i].Value)
    @Html.HiddenFor(m => profileModel.MemberProperties[i].Alias)
    <br />
 }

This code correctly displays all the member properties with their values, but if I modify any of them and hit 'save', nothing happens.

Debugging the ProfileController I've found that the ProfileModel's MemberProperties contains 0 items while saving, instead of the MemberProperties as shown in the View.

What's wrong?