You could try reproject the UVs from the original mesh to the retopo one. I know for certain you can do this in Softimage and seem to recall something similar in C4D, Maya. MAX should also have something like that, try googling. Or else get the 30 day trial of Softimage and use that (look up GATOR in the Softimage docs)

The transfer wont always be perfect if the meshes are too different but it will give you a very good starting point for manual tweaking. eg I did this to the default cloth that comes with MD: