This should be easy, but it's not working.

I have a form on a list that includes a Managed Metadata field.  The field is not required and only allows a single value.  It is possible to enter a value in the field or change an existing entry from one value to another value in the term set.  However, it is not possible to remove an existing value and go back to a blank field.  I can remove it in the form but the value is still there after I save the changes.  The version history shows that I changed the item but no field is shown.

The problem happens on a pristine form with absolutely no changes made.  This is on SharePoint 2016 with Nintex Forms 4.3.2.0.

If anybody has an idea of how to remove a value from a MM field, please pass it along.

Sheila