Attaching tile layers to parent tile.

[Samoflan]

I was using debug mode to add some grass trim overlay to a driveway I made so it didn't have sharp harsh edges. I noticed all the overlays are added a their own layer (1) up from the base tile layer (0). When comparing them to other unmodified tiles. Those are all tied together to the parent tile as attached layer (0). Is there a way in the debug menu OR by editing the chunk with a hex editor to combine or attach the layers together? Otherwise I notice I get graphical clipping issues especially when a vehicle goes over these modified tiles. I think it's because they are separate layers and not combined as parent and attached layers.