Maybe I just saw this, or that this is a recent warning, but WP pages now warn against starting a permalink with a word (categ/postname etc)....
This after an years worth of indexing thousands of posts... its disheartening.
Earlier my permalink structure was:
But on one of my sites - with about 10,000 posts, I changed the permalink to include postid like so:
/%post_id%/%category%/%postname%/ and VOILA - google's old indexed links would automatically redirect to the new permalink structure.
However, on a website with over 20000 posts, th redirecting or whatever is happening, is not successful. Instead it shows a broken link. Whats going on? Can someone help?