Yes, I believe this is happening because how Zbrush creates the displacement map, it is not really projecting anything. It’s somehow calculating the difference between subdivisions, which is not quite the same. In order to get proper results you will have to bring your highres and lowres mesh over to 3dsMax and use the Render to Texture feature.
Keep in mind that GoMax main purpose is to make life easier in the modelling / texturing / UV phase. It’s not really meant for proper displacement or proper normalmap generation.