I am trying to override an existing menu item from the administration area in a plugin but cannot fathom how this may be done.
I have followed the tutorials for creating plugins and have also inherited from IAdminMenuPlugin and followed the various posts. Through these tutorials I have been able to successfully add a new menu item (which isn't what I require) to the menu in the administration area.
What I really want is to be able to override Catalog->Categories->List and replace it with the functionality that is within my plugins controllers and views.
The sitemap isn't the same thing as a 301 redirect. If there is anything wrong with the admin sitemap (i.e. the plugin didn't load properly) then the admin section won't load either - I don't advise editing the sitemap on the fly for redirecting.