Update permalinks

Question

I have added custom "folder" named Srpski to my permalink structure as you can see in .htaccess file below. So in WP Dashboard > Settings > Permalinks my custom permalink structure looks like this:

http://webdizajntest.com/poljoprivredni-fakultet/Srpski/%postname%/

This i working great when i add new post or page. It's displaying their permalinks with Srpski in url structure and that is what i need because of maintaining PageRank.

Problem is with old pages and posts. Their permalinks do not have this "directory" Srpski in url structure because they were saved without it.

I have a lot of pages and posts and i can't make them from the beginning, so my question is: How can I update all existing page and posts permalinks in DB to have this structure with Srpski in URL?

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /poljoprivredni-fakultet/
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /poljoprivredni-fakultet/Srpski/index.php [L]
</IfModule>
# END WordPress

Answer 1

You can try switching to basic permalink structure (the one with post id format) and then again choose custom permalink.

Or you can use following plugin to write desired URL for each page

Custom Permalink Plugin

Answer 2

Check if your General options have to correct URL set. (sorry that I can't comment this, not enough rep here)

If your htaccess file is correctly set on your server, everything should be working fine.

To move the url's try this plugin

Answer 3

Problem is with old pages and posts. Their permalinks do not have this "directory" Srpski in url structure because they were saved without it.

I assume you mean links within the posts themselves. If so, you'll ideally want to edit the database entries. (There are plugins for that.) If not, some mod_rewrite rules should do the trick but your question isn't very clear.