Actually I found a problem with the code I posted above. This code works for any WordPress redirects from wp-admin to wp-login or directly accessing wp-login.php.
What the condition / rule says is do NOT redirect to the new site if the URI/URL is either /wp-admin or wp-login.php. All other URI’s/URL’s will be redirected to the new site except for /wp-admin and wp-login.php.
# WP REWRITE LOOP START RewriteEngine On RewriteBase /wordpress-testing-website/ RewriteCond %{REQUEST_URI} !^(/wp-admin|.*wp-login\.php.*) [NC] RewriteRule (.*) http://www.ait-pro.com/$1 [R=301,L] # WP REWRITE LOOP END