Hello, @eternity,
Actually, You can only import the pages of the demo you want. Our theme provides this option while importing the demo. Check this image: https://postimg.cc/SYR5pnKg by doing this you can import the homepage of the demo you want.
Note: Please take a complete backup of your site first before doing this in case if anything goes wrong you should have a backup of your site.
Regards 8Themes Team.