Generate multipart message via XML transformation

I have created an XML transformation, as below, and it does create the 2 named parts I need. But it has a side effect that it also creates a new message with only the xml version header as the content.

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:XQMessageElem="http://www.sonicsw.com/sonicxq/com.sonicsw.xq.service.xform.TransformationElementFactory"
extension-element-prefixes="XQMessageElem">
    <xsl:strip-space elements="*"/>
    <xsl:template match="/">
    <XQMessageElem:XQMessage>
        <XQMessage>
            <part>
   <header>Content-Type=text/xml,Content-ID=Operation</header>
             <content>
                 <operation>
                  <xsl:value-of select="PTManifestSonicStandard/Operation"></xsl:value-of>
                 </operation>
             </content>
            </part>
            <part>
            <header>Content-Type=text/xml,Content-ID=OperationData</header>   
             <content>
           <PTManifestSonicStandard>
               <xsl:apply-templates/>
           </PTManifestSonicStandard>
             </content>
            </part>
            </XQMessage>
    </XQMessageElem:XQMessage>
    </xsl:template>
   
<xsl:template match="PTManifestSonicStandard">
     <xsl:copy-of select="ttPTManifest"></xsl:copy-of>
</xsl:template>
    <xsl:template match="text()"/>
</xsl:stylesheet>

Please excuse the formating, having trouble pasting XSLT.

Message was edited by: GRANT WALMSLEY