Well, I am not sure BF2 unit anim files are compatible with BF1. I've tried using standard, conventional names for replacing animations, skeletons, and they just crash the game upon load.
Bottom line, I think unless you re-export the animations as BF1-compatible, it ain't gonna work. Sorry.
Bottom line, I think unless you re-export the animations as BF1-compatible, it ain't gonna work. Sorry.