Particle Behavior Won't Record

Hi,

I'm trying to record confetti as particles, it shows up fine while recording, but then it isn't saved. 

I've tried having it as "snow" but then I couldn't transform the origin point or size. "Point and Shoot" shows nothing. "Track Mouse" works fine in my scene but simply doesn't record. I tried with and without a trigger set to it to see if that would make a difference, but nothing seems to help.

What am I doing wrong? Any help would be appreciated!