If you read the second thread you mentioned above, you will see the following
Note: If your site should not be disturbed, you should clone your site in a sub folder or sub domain, and execute this whole process on the cloned site first. This would allow you to finalize all the settings for the Xtreme theme without disturbing your live site, and only apply these to the live site when you have worked out all the details. If you need help with cloning your site, read the article on the subject in the FAQ http://weavertheme.com/migrate-your-site-to-new-domain-name-or-new-server/
If you do not do that, as soon as you start loading the converted settings, you live site will change