Migrated an older project where I tried out a Layer Based Landscape Material from 5.1 to 5.3 because I wanted to check out the new Nanite Landscapes.
I import the Areas for each Material via a Mask I exported from Gaea. It all looks and works fine until I actually save the project. Once I do, it only loads certain areas correctly. Looks even worse with more Landscape Layers ontop of each other. Screenshots are just the Ground Layer and a Snow Layer ontop.
Toggling an Edit Layer that has a Sculpt on it (not just Paint) in the Landscape Editor on and off partially fixes it, until I save again.
I tried replacing Layer Infos, changing Layer Infos from No Weight-Blended to Weight-Blended, reimporting the Masks and rebuilding Nanite Data, but nothing except disabling the Nanite option for the Landscape itself works.
The Translucent Mountain is an extra Mesh, not part of the Landscape itself.
Any ideas on how to fix this and keep the Nanite Landscape?