[undertow-dev] Forwarding request's parameters to error servlet

Hello, I am working on few application's migration from Jonas which is based on tomcat to Wildfly 8.2, some of theses applications are using the <error-page> section of web.xml to forward the request to a specific servlet. if the user type something like: localhost:8080/someunmappedurl/?param=elghaoua the next error-page section force a forward to a specific servlet <error-page> <error-code>404</error-code> <location>/specificServlet</location> </error-page> with tomcat this specific servlet receives the parameters of the initial request but with Wildfly/Undertow these paramters are lost. tryed on the Wildfly 8.2 and 9.0.1 Any idea how to fix this ? Thank you !