I’ve run GeneratePress Premium on two websites for years and I’ve enjoyed it so much that I’m getting ready to change a theme on another website to GP Premium. I’ve had this website up for a longtime, and I’d like to keep as much of my content as possible. I have made a backup of my site, and checked with the hosting company, but I just thought I’d check and see if you have any tips for me before I hit the “activate” button.
aside of customizer settings, Themes ( generally ) store other data such as the Site Identity Logo and any Customizer > Additional CSS. If any of the CSS is related to your own custom HTML that you want to keep then you will want to copy that CSS out to a safe place.
Ideally it is best to create a Staging Site, most hosts provide that service, then you can switch themes, make any modifications and when you’re happy have the host push the staging to the live site.