Please read what I have written two posts above yours. There are no modified parts, only modifier meshes. Cura can’t use such things, nor per part print settings (correct me if I missed an update). You have to use Simplify 3D or Slic3r. For Slic3r, you have to modify the modifiers (yea..), I did that for the fuselage ones but not for the wing part as far as I remember.