The weightmaps of Landscape reference a path instead of a texture.
Anyway to fix that? it would ensure that the file actually exists etc.
Almost all other assets work this way though. They all ultimately end up referencing a file on the hard drive, that way you can re-import new updates into the assets. As far as I know, the raw files that you’re talking about don’t have to be in their directories anymore because the data is already stored in the weightmap. They are just there so you can click the “…” and reimport any updates to replace the contents of that layer with.