.htaccess Redirect issue: last parameter added automatically - php

Question

I want to redirect some URL's using htaccess file.
My htaccess files is as under:
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
Redirect /old-post-type/old-parent-post/old-post-slug/ /new-post-type/new-post-slug/
***** Some More URLs *****
# END WordPress
It should redirect to http://yourwebsitedomain.com/new-post-type/new-post-slug/ but, it is redirecting to http://yourwebsitedomain.com/new-post-type/new-post-slug/old-post-slug/
"old-post-slug/" automatically added to last I don't know why?
Any suggestions accepted.

Answer 1

I wouldn't recommend mixing mod_alias and mod_rewrite like that, the RewriteRule runs first, then runs again after Redirect, making strange things happen. Just use mod_rewrite all the way through, with the redirect before the other rules and with L flag, like so:
RewriteEngine On
RewriteBase /
#I put 302, use 301 if permanent redirect is what you are after.
RewriteRule ^old-post-type/old-parent-post/old-post-slug/$ /new-post-type/new-post-slug/ [L,R=302]
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
And this only if you really must use htaccess for the redirects, like someone mentioned wordpress already has functionality for dealing with redirects.

Answer 2

Try this:
Redirect 301 /old-post-type/old-parent-post/old-post-slug/ http://your-domain.com/new-post-type/new-post-slug/
This should work. The 301 stands for "Moved Permanently".