Particle Collision Question

Hi,

After reading a thread on here I found out how to make particles collide with objects by attaching a World Particle Collider to the particle system. All good. However, what I want to do is have a particle system with particles which start completely still and are disturbed and moved by a collider moving through them - this doesn’t seem to work. If the particles already have velocity of their own, they do bounce of an object, but if they’re static to being with, they aren’t affected by a moving object.
Anyone know a way around this?
Thanks
S

Bump.

No-one has an answer to this? Is it impossible?