i have 1000+ posts in my website,
now suddenly i planned to change the permalink structure, after changing none of the page is getting opened, all are getting 404,
my permalink is
here location and mba_courses are the custom taxonomies,
if i add postname in starting then everything works fine,
but if i put it in end then nothing seems to work, even my about-us page or contact-us pages are also not opening, i get 404 page,
whats wrong in it,
what should i do?