Hi Jakub,
The upcoming version will be released around early of next week, please keep an eye on our web site.
The type of ShapeFile is defined when you creating it. We don’t support changing the type of ShapeFile.
I tried just changing the Shape Type of the SHP file’s Header, it doesn’t work because Polygon and PolygonZ have different record format which you need to change them too.
By the way, here is a screenshot which loading from your ShapeFile by our current version.
Any questions please let me know.
Thanks,
Howard