I'm preparing for a major overhaul of our shopping cart, which is going to completely change how the urls are structured. For what its worth, this is for Magento 1.7.

An example URL would be: {domain}/item/sub-domain/sub-sub-domain-5-16-7-16-/8083770?plpver=98&categid=1027&prodid=8090&origin=keyword

and redirect it to {domain}/catalogsearch/result/?q=8083710

My web.config is:

<?xml version="1.0" encoding="UTF-8"?>
   <configuration>
    <system.webServer>
    <rewrite>
    <rules>
     <rule name="Magento Required" stopProcessing="false">
      <match url=".*" ignoreCase="false" />        <conditions>
                        <add input="{URL}" pattern="^/(media|skin|js)/" ignoreCase="false" negate="true" />
                        <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
                        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
    </conditions> <action type="Rewrite" url="index.php" />
    </rule>
                <rule name="Item Redirect" stopProcessing="true">
                    <match url="^item/([_\-a-zA-Z0-9]+)/([_\-a-zA-Z0-9]+)/([_\-a-zA-Z0-9]+)(\?.*)" />
                    <action type="Redirect" url="catalogsearch/result/?q={R:3}" appendQueryString="true" redirectType="Permanent" />
                    <conditions trackAllCaptures="true">
                    </conditions>
                </rule>
   </rules>
   </rewrite>
        <httpProtocol allowKeepAlive="false" />
        <caching enabled="false" />
        <urlCompression doDynamicCompression="true" />
  </system.webServer>
</configuration>

Right now it seems the redirect is completely ignored, even though in the IIS GUI the sample url passes the regex test. Is there a better way to redirect or is there something wrong with my web.config?