XSLT : Trouble Adding Namespace

I need to add namespace xmlns:prx="urn:sap.com:proxy:SB1:/1SAI/TAS04BED82951A661E02EC4:701:2008/06/06" to my xml document after doing a PI message mapping.

When I run the following XSLT code in my XML editing software, it works as desired.  When I import the XSL program and use it at runtime, it is not adding the namespace.  Can anyone help?

XSLT:

<?xml version='1.0' encoding='utf-8'?>

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:prx="urn:sap.com:proxy:SB1:/1SAI/TAS04BED82951A661E02EC4:701:2008/06/06">

<xsl:output method="xml" indent="yes" encoding="UTF-8"/>

  <xsl:template match="@* | node()">

    <xsl:copy>

      <xsl:apply-templates select="@* | node()"/>

    </xsl:copy>

  </xsl:template>

  <xsl:template match="/*">

    <xsl:copy>

      <xsl:copy-of select="document('')/xsl:stylesheet/namespace::*[not(local-name() = 'xsl')]"/>

      <xsl:apply-templates select="@* | node()"/>

    </xsl:copy>

  </xsl:template>

</xsl:stylesheet>

Source:

<?xml version="1.0" encoding="UTF-8"?>

<ns0:ChartOfAccountsReplicationConfimation xmlns:ns0="http://sap.com/xi/SAPGlobal20/Global">

  <MessageHeader>

    <UUID>4C321305CA1400AAE10080000A98800D</UUID>

    <ReferenceUUID>4bff533d-2452-00f2-e100-80000a98800c</ReferenceUUID>

    <CreationDateTime>2010-07-06T13:57:30Z</CreationDateTime>

    <SenderBusinessSystemID>ERP_GTPSRM_ECC6_S1</SenderBusinessSystemID>

    <RecipientBusinessSystemID>EDG_030_BusinessSystem</RecipientBusinessSystemID>

  </MessageHeader>

  <Log>

    <BusinessDocumentProcessingResultCode>3</BusinessDocumentProcessingResultCode>

    <MaximumLogItemSeverityCode>1</MaximumLogItemSeverityCode>

    <Item>

      <Note>Processed by PI</Note>

    </Item>

  </Log>

</ns0:ChartOfAccountsReplicationConfimation>

Desired Target:

<?xml version="1.0" encoding="UTF-8"?>

<ns0:ChartOfAccountsReplicationConfimation xmlns:ns0="http://sap.com/xi/SAPGlobal20/Global" xmlns:prx="urn:sap.com:proxy:SB1:/1SAI/TAS04BED82951A661E02EC4:701:2008/06/06">

     <MessageHeader>

          <UUID>4C321305CA1400AAE10080000A98800D</UUID>

          <ReferenceUUID>4bff533d-2452-00f2-e100-80000a98800c</ReferenceUUID>

          <CreationDateTime>2010-07-06T13:57:30Z</CreationDateTime>

          <SenderBusinessSystemID>ERP_GTPSRM_ECC6_S1</SenderBusinessSystemID>

          <RecipientBusinessSystemID>EDG_030_BusinessSystem</RecipientBusinessSystemID>

     </MessageHeader>

     <Log>

          <BusinessDocumentProcessingResultCode>3</BusinessDocumentProcessingResultCode>

          <MaximumLogItemSeverityCode>1</MaximumLogItemSeverityCode>

          <Item>

               <Note>Processed by PI</Note>

          </Item>

     </Log>

</ns0:ChartOfAccountsReplicationConfimation>