irule redirect when url has special characters

I have this redirect irule that works (partial code included below) and for the line that says chat.it.umn.edu { HTTP::redirect https://umnprd.service-now.com/nav_to.do?uri=chat/chat.do } this currently works but I need to change the redirect to :

chat.it.umn.edu { HTTP::redirect https://umnprd.service-now.com/nav_to.do?uri=/$chat_support.do%3FqueueID%3Df5290d0331f350005a4dccd0e0a649ca

This is valid url and I can use it successfully directly in a browser but when I try to redirect to it in my irule I always get : The connection was reset The connection to the server was reset while the page was loading.

Any thoughts - are any of the special characters messing things up ? I did try putting double quotes around the url but that did not help any.

when HTTP_REQUEST {
switch [HTTP::host] {
    systemstatus.umn.edu -
    www.systemstatus.umn.edu -
    chat.it.umn.edu { HTTP::redirect https://umnprd.service-now.com/nav_to.do?uri=chat/chat.do }
    walk-in.it.umn.edu { HTTP::redirect http://it.umn.edu/help/walk-in }
    ggg.umn.edu -
            ggg-sunset.umn.edu { HTTP::redirect  http://drydock.cehd.umn.edu/ceed/projects      /ggg/gggwebsitenotice.html }
    storage.umn.edu -
            dataprotection.umn.edu -
            backup.it.umn.edu { HTTP::redirect http://it.umn.edu/services/all/storage-data-protection/index.htm }
            eval.umn.edu { HTTP::redirect https://srt.umn.edu/blue }
            splunk.umn.edu { HTTP::redirect  https://sites.google.com/a/umn.edu/splunk-umn } 
            default { reject }
}

}