Hello, @KD,
Importing the site does not delete any pages or posts. However, it can overwrite your existing content. It is not recommended to do a full import of another demo version when 1 was already imported, your products won’t disappear, but it may cause a mess in content/settings.
If you want to get sections from other demos, use Studio – edit a page using Elementor > click here http://prntscr.com/10ec6jw and https://prnt.sc/10ec6zt
Regards 8Themes Team.