No, Demo Importer will just add demo content to the existing content, without deleting the content you have previously added.
If you clicked the Return to dashboard option (that closed the Demo Importer), you could restart the Demo Importer by visiting yourdomain.com/wp-admin/admin.php?page=merlin (yourdomain.com being the URL of your site). If, however, you
As you had a chance to see, installing a theme demo is a pretty quick process. When you install it, you get access to every post, page, custom post type, comment, and