Yesterday a guy shot the heli down twice and but it wasn't count in the Player Challenges.
Any idea why?
It was the first time that this happened as far as I know.

Merged post

Ok. The thing is the Announcement says Player 1 has shotdown the heli. But very often Player 2 gets in the records.
My guess is that there is a discrepancy between the one who gave the heli the most damage and the one who had the lost shot on it.
That's why it happens that when 2 players shoot the heli very often the one who shot the most gets the record and not the one who shot last.
Maybe it is the other way round.
So players very often don't understand why they did not make a heli shotdown in the records and it's even more weird when the announcement sayd that they did shoot it down.