From the v2.0 release, nonlethal update seems to have neutered E/M CCW: previously the E/M CCW with its ammo type N+E/M and save BTS, was interpreted to cause the target to apply both ammo types - causing two saves against 0.5x BTS, applying both the wounds from N ammo, and the E/M isolation (and immobilization) effects for each unsaved wound. How do E/M CCW work in the N4v2.0 world?
There is a thread on this here (https://forum.corvusbelli.com/threads/new-e-m-ccw.42266/) . Currently, I support @Aspect Graviton's interpretation that E/M CCW do not have the Non-lethal trait, thus it does not apply to them.