You must name the style with a new name and then change to that newly named style on your word endnote ribbon. If you save it to the same name, there are two of them and endnote invariably uses the original.
You must name the style with a new name and then change to that newly named style on your word endnote ribbon. If you save it to the same name, there are two of them and endnote invariably uses the original.