Hi Frank - yes I know how to duplicate. But I think I deleted one row of the original layout, and wanted to get back the original setup. That´s why I was asking, if it is possible if an existing template can be installed again. I wanted to avoid that I am duplicating the template, where the row is missing.
Edit: I am realizing that in HU2 it is working different than in HU1 with the predefined headers...
A good additional header pre-setting would be a headerless version, where there is no logo and menu (--> landing page) - if I am not mistaken, there is no predefined header for that yet.