In ArcGIS 10.6 you can create a field called FolderPath that when you convert Layer to KML is recognized as a way to folder out the KML in Google Earth. Using ArcGIS Pro 2.3.0 it no longer recognizing this field as one that relates specifically to KMLs and does not create any sort of foldering in Google Earth. Has anyone found a solution or come up with another way to do this besides exporting individual pieces of a file and rebuilding it in Google Earth?