Unfilled polygons in ArcMap are filled in an exported KML.
Symbolize a polygon layer in ArcMap with a border only, and a null fill color. Export with the Layer to KML tool. Add the KMZ back into ArcMap and the polygon has a white fill.
The KML file has the tag
<PolyStyle>
<color>00ffffff</color>
rather than this:
<PolyStyle>
<fill>0</fill>
Documentation states that "The layer symbology will be used as the KML symbol." but this is clearly not the case.
Bug or feature?
