UE4 to UE5 - Landscape Paint is Gone

As it says in the title, when I update my project from UE 4.27 to UE 5.0, the landscape paint resets to only one single layer everywhere. Is there any solution for this?

As a workaround, I have painted every cell of the landscape (one dot of paint to every cell) with every type of layer. This made the landscape become the same as in UE 4.27, the original version of the game.

But if anyone knows a more proper way to make it, I’d like to hear.