Instances - H2xDev/GodotVMF GitHub Wiki

The importer supports instances. If you have some geometry that you use repeatedly - select this geometry, Right Mouse Click -> Create Instance from Selection. All instances will be imported into instances_folder.

[!IMPORTANT] Keep in mind that in case you changed some instance, you need to open the instance's scene and reimport it in Godot by click "Import" in the inspector.
Or just remove the instances folder completely. In this case the importer will import required instances again.