Problem with rotor textures transparency

I am facing a problem with transparency of blurred rotors textures as it is shown below on pictures:

The only parts of those rotors correctly shown are the ones outside of the fuselage (fuselage is not in their background).

From PILOT VIEW LOD blurred rotors look fine:

Probably, it has been caused by sorting textures which I did lately for visual LOD (and didn't for pilot view LOD) to reduce sections. Copying unaffected polys from one LOD to another doesn't work. Is there anything I can do to fix the issue?