Went back to the blender edit and renamed all major parts and exported it, still had some pink textures so I updated a few more files and I now got a working paint joob (sort of) but the Lods are now broken.
As one can see shadows dont appear at distance and the repaint vanishes past a certain distance, this is due to a file setting I assume but I didnt touch thoose settings? I also went back to blender and renamed some more items but then theese errors poped up while exporting.
Also I have no intent on publishing theese mod alterations as I respect the work of all mod authors, I have just become restless that there are no released Swedish trains and sadened that Anton will most likely never finish his amazing work :(.