Eternal Hatred in the game rules is treated like and altered version of
Avoid Defeat. So when we read
Transfer Essence in the Archives is gives us the answer.
Transfer Essence: (Force; 1 Force point) A character using this Force power chooses any living ally, who does not have to be a legal target. Remove that ally from play and place this character in any legal square of the space the ally formerly occupied.
That ally is immediately defeated and cannot take advantage of any effects that would prevent that result (such as Avoid Defeat.) This ability is usable only on this character's turn.