Landscape layer painting problem after World Mashine

  • Painted landscape by masks (Pic. 1)

  • Blending painting with “Height Blend” and last layer by “Weight Blend” for hand drawing (Pic 2)

  • Trying to draw on the landscape but “Landscape Layer Data” existing and i get black landscape segment. (Pic. 3)

Q: How to manually create the “Landscape Layer Data” for Heigh Blend layers?