I believe you'll find that MQRFH2.usr does support more than 1 level of dept. It is only in conjuction with JMS properties (JMS based applications) that 1 level of dept is supported.
I have created a Message Set based on a WSDL. The Message Type is off course Envelope at the MQ Input Node. At the beginning of the processing I want to retrieve everything in the SOAP Header i ...