This thread helped me as well but I do have some questions. Im very new to this so please forgive me if Ive missed something obvious.
I have worked on a new design on my sub domain and started from scratch without importing my old site to the sub domain. So now I have a new design, with a new theme and new url structure. When setting the new design live I understand migration/ moving the site from subs domain to main domain can be easily solved with a plugin like for example WP migrate DB Pro.
Does this mean that when the design from sub domain goes live on the main domain, all content (media files posts etc) that have been published on the live site will be erased/ gone?
Would it have been easier to backup the old site and import it to subdomain and then develop it from there?
