Hi Jonathan,
Thank you for you reply! It sounds interesting, but I have some questions.
How do I create a Splines Edit Layer?
How would I use it? Do I use it the same as when I reference the landscape layers?
I have only found this about that method https://dev.epicgames.com/documentation/en-us/unreal-engine/landscape-edit-layers-in-unreal-engine#usingnon-destructivesplines but it seems to be out of date.
//Ida