ContentBasedRouter with XPath expressions does not work if input contains namespace declarations in SOA-P 5

Issue

• When the input document contains namespace declarations, the XPath ContentBasedRouter does not work.
• Using the following SOAP message XML input:

<order xmlns:orderinput="http://localhost/demo/orderinput" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
  <PurchaseOrder>
    <OrderHeader>
      <OrderType>PO</OrderType>
      <OrderNumber>123</OrderNumber>
      <OrderValue>400</OrderValue>
      <OrderDate>2010-04-10T12:00:00-05:00</OrderDate>
      <Action>create-order</Action>
    </OrderHeader>
    <OrderLines>
      <Line>
        <LineNumber>1</LineNumber>
        <Quantity>4</Quantity>
        <ProductId>ID9999</ProductId>
      </Line>
    </OrderLines>
  </PurchaseOrder>
</order>

• Using the following Xpath CBR:

<action class="org.jboss.soa.esb.actions.ContentBasedRouter"
  name="Route to manual or automatic order flow" process="process">
  <property name="cbrAlias" value="Xpath"/>
  <property name="destinations">
    <route-to 
      expression="/order/PurchaseOrder/OrderHeader/Action[text() != 'create-order']"
      service-category="Demo" service-name="UpdateOrDeleteOrder"/>
    <route-to
      expression="/order/PurchaseOrder/OrderHeader/Action[text() = 'create-order']"
      service-category="Demo" service-name="CreateOrder"/>
  </property>
</action>

• Results in:

ERROR [ContentBasedWiretap] No rule destination(s) [..] were matched, . Please fix your configuration and/or routing rules.

• The problem seems to be the namespace declaration, as using an input file without those works fine.