Hi Alexander,
I moved to new version 26.5 and here my results:
Please see:
Test data(input/output/QGIS)
5438 Gml-Kmz.zip (74.5 KB)
Remarks:
Kml is ok but Kmz output not seen in QGIS.
Thanks,... Gis can read kmz file but not write. danies8: “By...coordinates in degrees, but in your file the coordinates look like projection...