We are a new Magento Enterprise customer and have found the latest version of Magento Enterprise we are running on automatically converts our uppercase URLs indexed by Google to lowercase URLs creating for example:
<http://mysite.com.au/Riedel-O-Cabernet-Merlot-Buy-6-Get-8.html>

Magento forces it to be:
<http://mysite.com.au/riedel-o-cabernet-merlot-buy-6-get-8.html>

When we go live off our development server this week all our Google results will give 404.

Are you able to help us stop Magento from converting all URLs to a lower case?