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this isn't an exact answer, but i might be able to point you in a correct direction . you might be able to do a mod-rewrite by doing a redirection based on rewrite conditions.

for example, we once used the following to send users to our non-https, www page if they enter on a https: url. fyi we use helicon's isapi mod rewriter at www.isapirewrite.com/

RewriteCond %{HTTPS} (on)?
RewriteCond %{HTTP:Host} ^(?!www.)(.+)$ [NC]
RewriteCond %{REQUEST_URI} (.+)
RewriteRule .? http(?%1s)://www.%2%3 [R=301,L]

i use them as well and have not seen any issue.

hi -
i've been through this and can offer a few suggestions:
1.) see if your server can use some sort of rewrite program like isapi rewrite. you can create code to have the page rewrite the url to what you want.
2.) consider moving to a new ecommerce platform (scary, i know) and then using 301's from your old stuff to your new stuff. any ecommerce vendor that is not using seo friendly product url's in 2011 does not deserve your business. if they aren't doing that chances are they may also be behind on such things as pci compliance, security, and general features.

good luck!

hi -
i've been through this and can offer a few suggestions:
1.) see if your server can use some sort of rewrite program like isapi rewrite. you can create code to have the page rewrite the url to what you want.
2.) consider moving to a new ecommerce platform (scary, i know) and then using 301's from your old stuff to your new stuff. any ecommerce vendor that is not using seo friendly product url's in 2011 does not deserve your business. if they aren't doing that chances are they may also be behind on such things as pci compliance, security, and general features.

good luck!

a lot of rewrites use similar rules. not sure if this will help but:
http://www.isapirewrite.com/docs/

mentions  using "CL" (Case Lower)

i use them as well and have not seen any issue.

this isn't an exact answer, but i might be able to point you in a correct direction . you might be able to do a mod-rewrite by doing a redirection based on rewrite conditions.

for example, we once used the following to send users to our non-https, www page if they enter on a https: url. fyi we use helicon's isapi mod rewriter at www.isapirewrite.com/

RewriteCond %{HTTPS} (on)?
RewriteCond %{HTTP:Host} ^(?!www.)(.+)$ [NC]
RewriteCond %{REQUEST_URI} (.+)
RewriteRule .? http(?%1s)://www.%2%3 [R=301,L]