awk script xml file remove nodes

I have an XML file that i need to post process and need to remove certain lines/nodes in the file in this example i want t remove all nodes that have the word 'confirmation' in the node name,

Example XML and what i have tried below.

I open the file and readin the contens then output

Source XML File

<ShipNoticeItem lineNumber="20" quantity="8">
 <ConfirmationStatus type="reject" quantity="0">
 <UnitOfMeasure>PACK</UnitOfMeasure>
 </ConfirmationStatus>
</ShipNoticeItem>
<ConfirmationItem lineNumber="30" quantity="0">
 <ConfirmationStatus type="reject" quantity="0">
 <UnitOfMeasure>PACK</UnitOfMeasure>
 </ConfirmationStatus>
</ConfirmationItem>

cat $MyFile | awk -F "<" 'BEGIN {
  TRUE=1;
  FALSE=0;
 }

	{
	if ( length($0)==0 )
	continue;
		
         if ( substr($2,1,4) !="Conf") 
	  {
	  print $0;
	  continue;	
	}	
			
						
	if ( substr($2,2,4) !="Conf")
	{
	print $0;
	continue;
	}

 }' > /tmp/outputfile.xml

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