How to import/create terrain without lower layers?

Greetings everyone, I use the Roblox terrain editor a lot, especially the import terrain feature since i like to add my own heightmaps and colormaps for my projects.
One issue I had with the terrain importer is that it fills your terrain with some underground layers of ground, rock and lava which i don’t really need for my game, like these ones:


So far, I was forced to use the Replace tool to manually remove these material layers and replace them with air, which is very time consuming as i usually import big chunks of terrain.

My question is: Is there any way to import terrain without these underground layers?

1 Like

Working on the same thing right now, would also really like to find a way …