Engineer 3 challenge

This is still an issue. It was working and I got to 1840 somehow, and since then I have hit or shot down 3 helicopters with no progression. 

The fact that this is not fixed yet is unacceptable. **bleep** like this is why this company gets a bad rep

My challenge for the lock-on damage is stuck on 920/1000.  It's been weeks since theres been movement on this challenge

Engineer challenge 3 deal damage to aircraft with launchers is bugged for me too. Would not record any damage done to aircraft with launchers, then all of a sudden it jumped to 1840 damage done, then broke again and is now showing as completed in the menu but its still showing 1840 out of 2500 damage and it hasnt moved onto engineer specialist tier challenges. If I try to take down aircraft again it does nothing towards this challenge - needs fixing 

Still bugged, I'm stuck at the same damage level with 5 aircraft shot down today alone, none have counted

commenting because i did not see a solution .. issue persist 

I've already completed all the other challenges, I just need support and this one that I'm completely stuck on. I've done EVERYTHING possible, I reset the loadout for military engineering, removed all the camouflage, stickers, charms, I even reset the weapon equipment to the ones with a square on top which are the defaults, I removed the tank decoration, put the default character...

I had already tried shooting directly before, I tried a video I saw dying with reconnaissance, marking, switching to engineer, shooting, and nothing, I tried with an AA tank with all the ammunition, nothing at all...

Does another recon player really need to mark first??! The only thing I'm still not sure if I've managed to do is...

I'll try marking with the AA tank and shooting with the Stinger later, I've tried but I couldn't, if it doesn't work I'll have to wait for someone to mark, or call a friend to help me, there's no other way... :(

Having this issue too at Engineer 3 (Deal 2500 damage to aircraft using launchers) it not moved at all and I know I have been getting hits properly.

Really need them to fix this as I can't progress it

I got it to work yesterday. I had to play in breakthrough. I “tracked then untracked” the challenge. Then restarted the game. It tracked all my points to complete the challenge 

also happened to me