- Keep the original. For KMZ, first export its plots as KML in Google Earth.
- Open the KML locally in QGIS. Export the plots as GeoJSON in WGS 84 / EPSG:4326; the linked GIS guide explains the steps.
- Reopen the result. Check that every expected point or plot appears in the right place. A line is not an area.
- Upload the GeoJSON in the geodata section, then review and confirm the import.
Your data format
I have a Google Earth file (KML/KMZ)
I have a Google Earth file (KML/KMZ) — Polygon One
Convert KML/KMZ to GeoJSON before importing plots. Use QGIS locally on your computer as the default.