Custom Theme Permalinks generate 404

I have been having some issues with the links to our pages. We are running WP multi-site and currently have 56 sites. A user mistakenly changed the parent page of the page under “Page Attributes”, which then changed the permalink. I went in to see if I could fix it and it lets me name it as before, but when I try to view it, it gives me a 404 error. I am at a loss. I’ve been doing a lot of research and have read several times that it could be something in the .htaccess file. Here is what’s in ours.
# BEGIN WordPress
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]

# uploaded files
RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ – [L]
RewriteRule ^[_0-9a-zA-Z-]+/(wp-(content|admin|includes).*) $1 [L]
RewriteRule ^[_0-9a-zA-Z-]+/(.*\.php)$ $1 [L]
RewriteRule . index.php [L]
# END WordPress

Link to our site
http://www.azed.gov/

This is the problem link
http://www.azed.gov/special-education/deputy-associate-superintendent/parent-information-network/pins/

At one time it was accessible before she changed it then I tried to change it back to the link above and now it won’t work.

Any ideas??