What meaning/functionallity has the KeyWord 'UpdateDuringArchery', which is added to the falmer race?

don't actually know, but might have stg to do with the fact falmer are blind...?

(like "check where target is before shot" instead of "shoot whereever you first detected target"

(blind speculation (no pun intended , pls don't take for fact...)

You could try finding that keyword in the CK, right clicking it, and choosing "show use info" -- maybe it will give you a clue what other thing is referencing or checking for that keyword.

Did this already. This keyword is attached also to the DraugrRace and DraugrMagicRace, but no other usage.

This makes sense. Hmm, .... maybe a internal KeyWord for the engine/AI processor to follow the player as the target.