Scene Terrain Problem

[Artizan]

Spoiler

i'm editing this bit again and again using ground levels, and when i save and exit edit mod, and reopen the scene, it again becomes like this as if the level is cut with a knife. can you please help me solve it?
here is the scene's module id:
("multi_scene_8",sf_generate|sf_muddy_water,"none", "none", (0,0),(120,120),-100,"0x0000000020038f800005657a000073d0000060fa000023b4",
    [],[],"outer_terrain_steppe"),

 

[GetAssista]

terrain code in module is different from terrain code used for sco file creation. Either delete sco file and generate it anew, or put correct terrain code in MS

 

[Artizan]

how do i find the correct terrain code?

 

[GetAssista]

reverse the changes in module_scenes.
or try to guess which vanilla sco file was used, and take terrain code from vanilla module_scenes