1. Make a DB and FTP backup of the newer WordPress to be sure to be able to go back
2. Make an XML export file on the newer WordPress
3. Make a new database (leaving the old one just in case something goes wrong)
4. FTP: delete everything except for wp-content folder, sitemaps etc.
5. Upload older WP version, configure wp-config.php with new database and install blog as normal
6. Configure the blog
7. Import the cleaned up XML file
Idea came from:
https://prime357.org/node/55
Solution provided as-is with no warranties whatsoever. You are solely responsible for what you do with your blog.
