It's true that for the Micro Exporter, if Raytrace Objects is turned off, it can and will export other geometry, including populations. I don't think this would work for the vdisp export method described in this thread though as it's not using the normal rendering process, which is the reason the micro exporter "trick" works with RTO off. It's not that useful a trick anyway as the geometry is not properly differentiated, i.e. the populated objects are not separate from the terrain in any clear, meaningful way. It's kind of like getting a DEM with tree heights included, rather than bare terrain. Can be useful, but probably not what you're looking for if you want "population export".