ncamp on the DAZ Carrara forum did some testing and found that the MTL file includes only the color and highlight channels, the first two texture maps in order.  Channels with a numeric setting produce a solid color map more complex channels produce a pattern.  Even with assigned patterns the alpha and shininess channels did not produce a map.  Empty shader channels do not produce a map so the correlation for one shader will not necessarily match another.  To determine just what my original shader produced I'll need to go into the shader and examine the nodes.

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