In the Star Trek: Deep Space Nine finale “What You Leave Behind”, a number of characters have flashbacks to defining moments over the course of the series. It’s implied (?) by the looks on their faces that they’re not just “TV flashbacks” but rather exactly what they’re remembering about their time on the station.
That being said, Jake has a series of flashbacks and one is to his father in Sick Bay following one of Ben’s reappearances in season four’s “The Visitor”.
Given the ending of that episode:
Jake helps Ben return to the moment of the accident and keep himself from dying/disappearing.
Why would Series-Finale-Jake have any memory of those events?