I have a post in wordpress which belong to two categories - one is a parent and other is a sub-catory [like digital camera --> nikon]
My permalink structure is like this /category/postid/
When i make a post, WP would generate the URL as http://ww.abc.com/digital-camera/nikon/382/ which is perfect.
However, there are instances when WP won't add the sub-category nikon to the URL and the URL would then look like abc.com/digital-camera/382
Why does WP sometimes skip the sub-category. Any clues ?