Understanding feature selection
Features, layers and visual encoding
A GeoJSON Feature is one record with one geometry and one properties object. A MultiPolygon is still one feature even when its geometry contains several separate polygon parts.
This tool selects complete features rather than individual rings or parts. To select two shapes independently, they must be stored as two Feature objects in the FeatureCollection.
How to read the map
Selected features are exported with their full geometry and properties. Overlapping rendered features may require zooming in before the intended feature can be clicked.
Check the selected feature count and exported properties before using the subset as a replacement dataset.