Proxy servlet returns "page not found"

Question

I want all request ending with "/PPO" will be proxy to "http://www.yahoo.com".
          Explanation:
          Our application is deployed on:
          C:\bea\user_projects\rci_domain\applications\rdas
          "rdas" is an applications context, we access our application using:
          http://localhost:7001/rdas/LoginDev.jsp
          I want the following request should be proxied to another server.
          http://localhost:7001/rdas/PPO (request for "PPO")
          Should Proxy to: http://www.yahoo.com
          I tried to simulate the same type of scenario. Following is a part from my web.xml file.
          <servlet>
               <servlet-name>ProxyServlet</servlet-name>
               <servlet-class>weblogic.servlet.proxy.HttpProxyServlet
               </servlet-class>
               <init-param>
                    <param-name>redirectURL</param-name>
                    <param-value>http://www.yahoo.com</param-value>
               </init-param>
          </servlet>
          <servlet-mapping>
               <servlet-name>ProxyServlet</servlet-name>
               <url-pattern>/PPO</url-pattern>
          </servlet-mapping>
          Problem:
          It is taking me to yahoo.com, but with "Page Not Found" content. I don’t know why it is showing the yahoo.com page with "Page not found". For example you will see the same page what I am seeing using HTTPProxyServlet, if you try the following:
          http://www.yahoo.com/rdas/PPO
          or
          http://www.yahoo.com/blabla
          Note: I can not define "context-root" set to "/" parameter in weblogic.xml file, because our application is accessed using "/rdas". All request must have /rdas as well.
          I don’t know what I am missing here. Your solution/suggestions are really important. Your earliest reply is really grateful.
          Thanks
          Farhan

Answer 1

As Peter says, it might be a bug. I did another test. Selected the URL from my IDD, opened the Hyperlink panel, clicked on Create New Hyperlink and this is what I get: http://www.projectorcentral.com/paint_perfect_screen_%24100.htm. So ID is changing "$" to "%24". But, when I click on Go To Destination, still takes me to the website! I'm on a PC with CS6 8.0.1 and using Google Chrome.
Did a second test just for fun: without selecting the URL in the ID, I went to Type/Hyperlinks & Cross-References/Convert URLs to Hyperlinks and ID creates two Hyperlinks: http://www.projectorcentral.com/paint_perfect_screen_ and a separate: 100.htm. So, ID splits the Hyperlink right at "$". So definitely ID doesn't like the "$".