Using Convert(f1, Drivers.Kml, f2, Drivers.GeoJson) crashes when f1 is in KML v2.1. (see https://apps.sfwmd.gov/sfwmd/common/images/weather/storm_all.kml.)
The problem is with multiple Placemark entries that exist only…...NET version (Framework 4.x, .NET Core 3.1, .NET 6/7/8...