Source Particle Editor

I can’t seem to create a trail of particles that disappear over time.
I created particle 1 which is emitted continuously, has random lifetime of 1-4, has alpha fade and has position from parent particles as initializer.
Then, i created a second particle that is emitted instantly and travels upwards but there’s no trail of child particles after i added particle 1 to child list.
Removing alpha fade and decay does fix the problem but i want the particles to disappear.
Link to the file:
https://www.mediafire.com/view/ab48qkranpg3zic/test.pcf