Multiple hightmaps show in target layers after using HDA to generate Landscape.

When I used houdini to generate landscape materials, I found there were two height maps after baking landscape from hda↓


I first thought my hda tool might gave two height layers but I checked generated landscape’s bgeo file, there is only one height layer.
I’m wondering why this happened and how to keep only one heightmap to landscape.
Did anyone get same issues? Thx.

Same issue here but not caused by Houdini. I tried to export both heightmaps and they look exactly the same.
Maybe a bug?