title: Properly 301 redirect an URL with parameters to a different site
body: <p>Right now I have an outdated URL that is getting 404'd:</p>
  
  <pre><code>http://mysite.com/category/?tag=blue-example
  </code></pre>
  
  <p>It needs to be redirected to:</p>
  
  <pre><code>http://subdomain.mysite.com/blue/
  </code></pre>
  
  <p>This doesn't work:</p>
  
  <pre><code>Redirect 301 /category/?tag=blue-example http://subdomain.mysite.com/blue/
  </code></pre>
  
  <p>How do I properly rewrite this URL?</p>