Recently I have migrated the content directory into another project, renamed the directory with the project itself assets (not the packages), and since the level had not been renamed, created a new one, a new landscape inside it (technically several landscapes since the world size is greater than 8x8 km and I have water which disappears if the landscape size is greater than 8x8 km, and moved all the actors into the new level, and now some of the cells are much darker than they should be, a white snow becomes dark gray and a middle-lightness grass becomes black:
Here are the parts of my landscape material (except MF_Landscape_Snow since it was extracted from a proprietary package):
Here are the landscape settings:
The other info can be provided on demand if not proprietary.
I am using UE5.7.4.
How to fix this problem?