Well Polar, you are definatly using NaS as a basic, for that unit.
The railtrack is a NaS model, which is included in the scene_prop.txt and our acw_prop.brf. On the left you can also see part of our Rail fences
If you are using your old training map in your own module, those tracks wouldnt be visible at all..
It seems you are just replacing NaS files, like you did with the small Head Avatar on the health bar.
Its definatly a NaS unit you blurred out