I am struggling with this problem. I wish to change the permalink structure on my blog, or even have the ability to change the permalinks of individual posts, as I post them, without changing past post url's.
The problem is that when I first set up the blog, it was recommended that I use the permalink structure 'postid'. Therefore, when I change the post slug, the url is not affected.
If I simply change the permalinks I have to change the url's of all my posts.
Can anyone recommend a way to do this?