.htaccess mod_rewrite order in Wordpress

Question

I'm trying to redirect my old webpage traffic to another while keeping some links working and pointing to same content on the new site using .htaccess RewriteRule in Wordpress.

I use pretty permalinks and while these are redirecting fine as soon as I try to redirect rest of the content they doesn't resolve.

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^blog$ http://newsite.com/news/ [R=301,L]
RewriteRule ^news/(.*)$ http://newsite.com/news/$1/ [R=301,L]
RewriteRule ^old-category/(.*)$ http://newsite.com/news/$1/ [R=301,L]
</IfModule>

The above works fine and produce proper redirects even if someone uses link like

http://www.myoldsite/?p=1045       

As soon as I add something like

RewriteRule ^(.*)$ http://www.newsite.com [R=301,L]

It produces links like this

htttp://mynewsite/?p=1045

I can't wrap my head around the order that these rules are processed. I want to let the pretty permalink generate and then if it doesn't follow the any of the above rules go to the home page under newsite.com. How do I do this?

Answer 1

Try this

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{QUERY_STRING} p=1045$
RewriteRule ^(.*) http://newsite.com/tutorials? [R=301,L] 
RewriteRule ^blog$ http://newsite.com/news/ [R=301,L]
RewriteRule ^news/(.*)$ http://newsite.com/news/$1/ [R=301,L]
RewriteRule ^old-category/(.*)$ http://newsite.com/news/$1/ [R=301,L]
RewriteRule ^(.*)$ http://www.newsite.com/? [R=301,L]
</IfModule>