I fiddled away a lot of time trying to figure out how I can redirect URLS with special chars for eg:
http://www.test.com/index.php?page_id=13 to http://www.test.com/index.php?page_id=25 as every method to redirect this bit of url using .htaccess proved to be vain.
Eventually I found out a solution:
I used the following code in .htaccess and it worked like a charm:
RewriteCond %{QUERY_STRING} ^(.*&)?page_id=13(&.*)?$RewriteRule ^index\.php$ http://www.test.com/index.php?page_id=25 [R=301,L]
