We recommend installing one of our demo websites as a starting point. If you like to switch to another demo website, we recommend to reset the current demo by using a plugin such as: https://wordpress.org/plugins/wp-reset/. Note, that this is a complete reset and will also delete pages, posts etc.However, if you are looking for a certain element or page of another temnplate, you should use the template loader instead.
Please keep in mind, that these template can display differently to their original version. This is mostly caused by the theme options, which for example apply custom font settings and other settings such as the lightbox type to the template.