The answer is very simple:
When you run a retopo operation, after finished, Mudbox hide the original mesh, and automatically select the new retopologized meshm(turning it in bright yellow to indicate selction), and turn on the wireframe mode to show you the new topology.
Simply to deselect your new mesh,(turn off the brigth yellow color), use the shorcut Ctrl+D, (Like in Photoshop and or other aplications).
For turn of the wireframe displays, hit the W key.
I hope this would be helpfull.
Greetings:
Sergio Mengual
3D Artist-3D Generalist-3D Character Artist
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