I am confused by the pre-fight description and don't know if this is a bug or if I am misinterpreting it.

The description says once activated the pre-fight abilities remain active for the rest of the quest however once you activate the abilities and check the pre-fights in the enemy's node description it shows they are active for 1 fight and indeed when you get to the next fight the abilities you activated that say they will be active for the rest of the quest are not active anymore. Can anyone explain this to me and let me know if it is a bug or functioning correctly? I didn't see this mentioned anywhere else but maybe I missed something.