pop collision detect for replicated particle

[hodini]

hello

i am trying to create  weld effect using pop replicate and pop collision detect.

i want to emit(replicate) another new particle from replicated particles.

my planned work flow is Pop location → Pop replicate1 when collided → Pop collision detect for ''just born group'' of pop replicate1 and replicate new particle from those replicated particle  

however  pop collision detect works only for first replicated particle1. it doesn't detect the replicated(just born) particles

are there other work flows to create ''double'' pop replicate weld effect  ?

particleprj.hipnc