IGLA Challenge for Season 2 Catchup Hardware broken

Last night I was playing on Golmud and three times I shot a heli with the IGLA and the screen said vehicle destroyed, but it does not register in the challenge as another aircraft destroyed/support in destroying aircraft with the IGLA. Fix or replace the challenge with damage done using the IGLA please. Until it is fixed, I dont care for completing it. This is coming from someone who has completed every single challenge for multiplayer, except redsuck and gauntlet becuase I don't care for those modes.

Thank you