I have my site designed under an existing theme but I want to implement a new theme with a completely different site structure that I create from scratch (not from a site migration). How can I work on the new site structure with a new theme and new site organization without disrupting my current site function and without having to migrate the current site into the new theme to edit it? Then once I have the new site structure and design, how can i replace the current site with the new while maintaining a backup copy of the original design (in case something goes wrong with the new design/theme)?
can you speak to the best way to execute a new theme from scratch rather than migrating the existing site into the new theme (as appears to be the default)?