Grenades keep breaking frozen prop_physics

I have a prop_physics flagged with motion disabled, but everytime it gets hit with an explosion such as a grenade in gets blown away. Any way to fix this?

Try start asleep as well?

Check “Prevent motion enable on physics” or something similar?

Didn’t work.

I don’t see that, but options I have tried are:

Start Asleep
Don’t take physics damage
Debris- Don’t collide with the player or other debris
Motion Disabled
not affected by rotor wash
Prevent motion enable on player bump

even all of this at once. There has got to be some way.

*edit Nevermind it’s these certain type of grenades that is doing it.