This is probably a face palm question. On Wordpress 4.4. the link
...ie. it's redirecting to archive.php and displaying all posts in the category 'general'.
And I cannot figure out -why-. Is there a way to get a 'trace' of the redirections?
The .htaccess is the standard WP code. I have no redirection plug-ins. I have no redirect function calls in functions.php. I have disabled all plug-ins but Yoast 3.11.