Weapon damage bug

Damage count for the SICH G1 WP(incendiary airburst launcher) 

The incendiary damage inflicted by this weapon should count towards the support specialist 3 challenge. It doesn’t make sense that only the direct impact from the gun counts. The challenge calls for 2,000 damage dealt with this weapon. The direct impact damage only inflicts up to 14 damage making it absurd to accumulate 2,000 damage for the challenge. None of the other challenges are nearly this tedious. Can you please make the incediary damage count towards this challenge.