Why is the impact sound of RPGs hitting helis gone?

In the beta there was a sound the moment an RPG rocket hit a helicopter. Now there is no sound at all when it hits the helicopter. I really miss this sound.
Not having it make any sound until the helicopter hits the ground seems very unrealistic.


You can hear it in this video for example: https://www.youtube.com/watch?v=ciAofvfUlIk
And here is another different sound from another wave: https://www.youtube.com/watch?v=mmTJzmll7EQ

I mean... I would be fine with either of them. But please, at least give it SOME sound. I don't understand how it has been decided that making it completely soundless would be the best way to go.

Why is the impact sound of RPGs hitting helis gone?