Ark Dev Kit Map grid

when you first create a landscape there is a grid when you paint it with the texture for the first time. is there a way to get this grid back besides making a new landscape again. thanks in advance

The grid (dark lines) that you see when you first import and see the checkers is an old bug (your using 4.5.1, so, you get to still have that bug) in the shaders. When you rebuild lighting, it resolves it. Can you get those back? Nope. They were 100% unintended.