Projectiles not detecting when in physics volume

I have a WaterVolume and am logging during each tick for my projectiles what their ‘PhysicsVolume’ is.

When the projectile travel through my water volume, they log that they’re in DefaultPhysicsVolume_1.

What am i missing here? I’ve tried increasing the ‘Priority’ of my water volume, but the projectiles always log the same.

Any help is appreciated. Cheers.