[eluser]John_Betong[/eluser]
Once the URL's are all working then check that Google Webmaster Tools is happy with your changes.
Yahoo, Bing, Google, etc all use Canonical Links for the preferred URL.
SEO may also be happier if you set your Canonical Links:
Code:
<head>
...
...
<link rel='canonical' href='http://<?php echo base_url(). $this->uri->uri_string(); ?>' />
...
...
...
</head>