You could also use VRay scene converter ( you will need Vray 5+) to convert those to Vraymtl then use Corona convertor to bring it to Corona .
it would be nice to do that directly with Corona convertor tho.
it is not the best solution, but it is free to use ( you don’t even need a license to use the convertor )
Also without installing VRay, I don’t think Corona Converter can convert VRay materials, so for me it is a must-have, but of course your pipeline might be different.
Is there any news on this? Its a major frustration and time consuming to convert stupid 3dsmax Physical material to Coronas Physical mat.
Even if it was just a simple transfer of bitmaps into the right slots would be enough.