Redirect loop problem after primary domain change.

Hello!

I manage a WordPress Multi-site portal and recently, for contractual reasons, we had to change the URL from portaltagit.com to portaltagit.ne10.uol.com.br. I followed these instructions and everything seemed to be working just fine: http://wpengine.com/support/how-to-change-a-multi-site-primary-domain/

We needed to redirect people who accessed the site through portaltagit.com to portaltagit.ne10.uol.com.br – no problem there. But when someone with an old link, like http://portaltagit.com/moda/17802 tried to access, they would be redirected automatically to the site homepage, not the post itself. I found an apparent solution, by adding this line to my htaccess file after the WordPress stuff:

RedirectMatch 301 /(.*) http://portaltagit.ne10.uol.com.br/$1

And again, the URL changed like I wanted it to, but I then I came across a new problem: This webpage has a redirect loop. And now I’m stuck. I don’t have any other redirects anywhere that I can possibly think of, and I really need the old links to work.

Here is my complete htaccess file, without the RedirectMatch line, since it was throwing an error:

# BEGIN WordPress

RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [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).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

# END WordPress