When im playing game from start terrainshader works great, but when i save level then go out of game and when i come back and without game starting from new load saved game shows only one skin. When im loaded this i go back to menu and start new game - then again shader works great.
You can help Possible you have similiar problems?

P.S. Shader use 5 skins when works nice.

Please be more detailed in future, while information like the fact that you use 5 skins is useless, the information which shader you use is way more important.

From what you describe it sounds like a minor scripting error. You should reload the material/shader after you have opened the savegame.