Unable to save some object materials

Everytime I save the material and reload the map it comes back to what it was before, i have also changed the path manually in the main.materials file and it still does it, when I reload the map it doesnt change the paths in the materials file but it does in the game's shape editor. I'm trying to make a path for the base texture which is in my map folder, the rest of the textures are in the game maps folders. I noticed that it mostly only saves my changes on objects that are from east coast usa which is what I copied the base of the map from, objects from other maps don't work. Spent a day trying to figure this out but I just can't fix it. I tried clearing cache many times. Does anyone know what's causing this? Please

 

Im currently having this exact same problem. Some textures save fine but a couple refuse to save. I did the same as you, edited the materials, it saves but in game it still goes back to the path it was before and not the new one i set for it. Have you found a solution by any chance?

 

This was quite a while ago, so I'm not sure what fixed it but now I edit textures manually in the materials.json file and it works for me now. I change the paths to a different texture image and it works. Try clearing cache after you edit the materials.json file manually.