Replacing Old Material textures with Old Terrain Textures

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#1

I am not a texture guy, I need for my game a the old sandstone and sand textures as materials.
I’ve looking for someone who already did it but everyone only made the Materials not the terrain.
I tried doing it myself but i have no clue at what im looking at since I never ever made a PBS textures in my life.
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#2

Disable MaterialService.Use2022Materials to get the old materials.