shot a chopper down that crashed into another players base,
but landed on thier  building for furnaces.
top was the metal grating with electrics &  dusbin lights....
the fires from the chopper burned up the  lights & electrics but touched nothing else.... not even a single point damage to the other prefabs...

same config i posted previously... for NPC damage.

I noticed an issue with fire as well

    {
      "name": "fire",
      "members": "FireBall, FlameExplosive, FlameThrower, BaseOven, FlameTurret, rocket_heli_napalm, napalm",
      "exclusions": ""
    },​

try this.

if it doesn't work, try fire cannot hurt anything

It's ok.. as long as your aware of it .. .youll get round to fixing it...

But i think the  "fire cannot hurt anything" might impact special events like plave crashes or bradley... on PVE servers..