[PC] Battlefield 1, They Shall not pass. Assignments stat resets to zero!!

I've had the same issue on Xbox One.

It's ridiculous if you need to complete the other unlock criteria first that the game wouldn't say that anywhere. I spent a lot of time trying to get 15 kills in a round with both the M97 Trench Gun Hunter and M1909 Benet-Mercie Telescopic and both have reset to zero. I don't like either of those guns and don't want to keep playing with them, so the weapon assignments ought to be more clear if they need to happen in a specific order.