Delete saved post revisions from database
SELECT * FROM `wp_posts` WHERE post_status != “publish” and post_title like ‘%guest post%’
Change the post date or post modified date
Single entry: SELECT * FROM `wp_posts` WHERE post_status = “publish” and post_title like ‘%guest post%’
All: SELECT * FROM `wp_posts` WHERE post_status = “publish” and post_title != “” ORDER by post_date DESC