Problem Summary. As of WordPress version 2.6, each post (website page) has multiple revisions saved during editing. These revisions are given post numbers, yet they aren’t published or visible to site visitors. So, the result is that published posts are no longer numbered sequentially.
Problem Solution. To disable this feature, edit the wp-config.php file and add these lines of code:
/* DISABLE POST REVISIONS */
These lines can be added just below other similar lines of code that define settings of how WordPress will operate. Instead of using the setting of false, it is also possible to enter a number in place of the word false and then that number will define the number of revisions that WordPress will save for a document being edited.