Custom weapon animations break bash kill?

[ShinKungFuMan]

Running into a weird problem: when I set a weapon to use custom additive subgraph data, the weapon animation plays properly, even the bash animation plays properly, but the bash kill animation does not for the player. The target goes through their part of the animation (without dying) and the sounds for the impact play.

 

The animations' havok files aren't the issue themselves, as replacing an existing animation with them allows things to play properly if I point the weapon to the replace animation set. Generating metadata didn't fix it either, nor does putting the animation in one of the existing DLC subgraphs. What am I doing wrong?