Harmony premium particles restart question.

I was wondering if anyone had an idea on how to trigger a restart of particles?

Say I have a system with falling leaves, and in sprite emitter i set trigger to 1 at frame 100. It plays the particles and that’s that.

However say I want to restart and play the system from beginning at frame 300.

Setting sprite emitter to 0 and then 1 doesn’t seem to restart it.

Is creating a new project file or copy/pasting the entire system and duplicating it to restart the sprite emitter my only option?