I'm using this permalink for all
/%category%/%postname%/. Due to some reasons i want to change permalink to
/name/%post_id%/ for a single category and it's sub-categories.
i.e. For all permalink is like this - http://www.example.com/categoryname/postname
and i want to change permalink for "world" category and it's subcategories like "india","u.s." etc. to this - http://www.example.com/world/34343
How i'll do that?