Fixed SVs in a custom starter playfield creates a square dirt texture underneath it, which looks a bit odd. Is it normal? And is there a way to avoid it? See below screenshot:
A little bit late in the answer, but - - This is the 'POI terrain replacement texture'. Even a fixed SV is treated as a 'POI' by the placement algorithm, so you will always get this texture if it is set there in the terrain.ecf. To remove this replacement tex from all POI in that biome: - Load your world in a game session. Note the in-game name of the world you are currently on. - Open in-game console, type 'te' for Texture editor. - Enter godmode with console command 'gm'. Fly to the biome, where the POI is in. - Use either the ESC menu, or better, the 'N' building menu to free your cursor. - Toggle the small 'debug' checkbox. Check the numbers shown on the terrain, these are the textures you want to adjust. - Toggle the 'debug' checkbox off again. - Select the affected textures in the upper rows. Then use the small arrows to set the 'Replace ID' number to the same as the ID number of the 'TerrainID'. (= tex will be the same) or select another ID number of a different, less intrusive tex you already used. (The change will only be visible after a re-generation of the world.) - Press 'Save' button. - Exit the game session. Locate your newest save file, and the saves\games\((your Savegame))\Templates\((Worldname)) with the name you noted before. In there should be a 'terrain.ecf' that recently got modified. Use that into your scenario's playfield folder.
To add on to Needleship's explanation, texture changes are now saved to the scenario's playfield instead of the save game, so no need to copy anything over. This also means you should keep backup copies somewhere since pressing save in game will overwrite the texture file in the scenario.
Thanks! Wasn't aware of that change! (I'm using the debugmode for texturing, but I thought explaining that would have been longer. )