Pretty common and simple question, I would assume, but I really need to be aware of any consequences and best practices before I recommend this to my friend.
He has a website with 11,000 Posts, all with the Permalink structure ?p=36841, for example:
This is a Wordpress site. We're changing the theme, and improving the content going forward to include tumblog and featured articles so we want to update the Permalink Structure to %/postname%/
How should the change be accomplished and what should we consider when doing so.
I understand I could just change the permalink structure, and I believe Wordpress creates 301 redirects for the changed URL's but I am concerned about how many Posts there are.
Also, how will this impact Indexed Pages and Backlinks. I assume if the redirects are acting properly, the indexed pages and backlinks will remain useful, intact and/or updated.
I have found this possible solution for the 301 redirects:
Plugin: Permalink Migration for Wordpress
Thanks so much for your feedback on this.