SOAP response enclosed in XD tags

Hello,

I use this function to make a SOAP request to my server:

function Execute-SOAPRequest 
( 
        [Xml]    $SOAPRequest, 
        [String] $URL 
) 
{ 
        write-host "Sending SOAP Request To Server: $URL" 
        $soapWebRequest = [System.Net.WebRequest]::Create($URL) 
        $soapWebRequest.Headers.Add("SOAPAction","`"`"")

        $soapWebRequest.ContentType = "text/xml;charset=`"utf-8`"" 
        $soapWebRequest.Accept      = "text/xml" 
        $soapWebRequest.Method      = "POST" 
        write-host "Initiating Send." 
        $requestStream = $soapWebRequest.GetRequestStream() 
        $SOAPRequest.Save($requestStream) 
        $requestStream.Close() 
        write-host "Send Complete, Waiting For Response." 
        $resp = $soapWebRequest.GetResponse() 
        $responseStream = $resp.GetResponseStream() 
        $soapReader = [System.IO.StreamReader]($responseStream) 
        $ReturnXml = [Xml] $soapReader.ReadToEnd() 
        $responseStream.Close() 
        write-host "Response Received."

        return $ReturnXml 
} 

The soap response is well recived but with the command "$ret | Export-Clixml  c:\1.xml;Get-Content c:\1.xml", the XML file contains:

<ObjsVersion="1.1.0.1"xmlns="http://schemas.microsoft.com/powershell/2004/04"><XD> ... </XD></Objs>

Between XD tags I have my xml reponse received from the server except that "<" and ">" are converted to the html code, "&lt;" and "&gt;".

I'm using select-string cmdlet with -patern option to check the response, but it would be more convenient to use the xml way like $ret.SelectNodes()

I tried doing a replace on the response before doing the export-clixml, but it doesnt work, how can I do this ?

Thank you :)