Changing an XML document using XSL transformations

[adk]

Hi. I have an XML document that I want to perform an XSL transformation on and I'm not sure how to get the results I want. Let me give an example of the original and desired documents.

Original XML:
<Material_Description Material_ID=&quot;MyVideo&quot;>
	<Volume Material_ID=&quot;MyVideo&quot;>
		<Label>MyVideoFootage</Label>
		<Shot Material_ID=&quot;Shot1&quot;>
			<In_Frame />
			<Out_Frame />

			<Shot Material_ID=&quot;SubShot1a&quot;>
				<In_Frame />
				<Out_Frame />		
			</Shot>

			<Shot Material_ID=&quot;SubShot1b&quot;>
				<In_Frame />
				<Out_Frame />		
			</Shot>
		</Shot>
		<Shot Material_ID=&quot;Shot2&quot;>
			<In_Frame />
			<Out_Frame />
		</Shot>
	<Volume>
</Material_Description>

I'd like to use an XSL transformation to create an EXACT COPY of the original XML document plus a modification in the XML node hierarchy so that if a "SubShot" exists, it replaces its "Shot" parent node.

Desired XML:

<Material_Description Material_ID=&quot;MyVideo&quot;>
	<Volume Material_ID=&quot;MyVideo&quot;>
		<Label>MyVideoFootage</Label>
		<Shot Material_ID=&quot;SubShot1a&quot;>
			<In_Frame />
			<Out_Frame />
		</Shot>
		<Shot Material_ID=&quot;SubShot1b&quot;>
			<In_Frame />
			<Out_Frame />
		</Shot>
		<Shot Material_ID=&quot;Shot2&quot;>
			<In_Frame />
			<Out_Frame />
		</Shot>
	<Volume>
</Material_Description>

Everything I read about XSL transformations indicates that this should be possible, but I can't work out the syntax to achieve the desired result. I believe I could solve this using a DOM, but I'm very new to XSL and I suspect the XSL solution would be more elegant and extensible. Humble cries for help from an XSL rookie.

Best regards,

ADK.