In the Season 1 finale "One in a Lifetime" Jack Carter
travels into the past to prevent Henry from saving Kim's life and creating an alternate timeline, thus erasing his and Henry's own future.
Upon resolving the timeline, Henry confronts Carter, knowing that he made the right decision but unable to accept it. They agree to erase their memories of the event, but Henry
secretly destroys the memory device after erasing Carter's memory, and angrily says that he will never forget.
Early in Season 2 it's implied that Henry is still dwelling on the incident, leaving the possibility for tension between him and Carter, but they eventually resume their close friendship and the subject is never touched on again.
In later episodes does Henry still remember Carter's role and just get over it, or did something happen to change his past or memories? Was this plot thread intentionally written out of the series, or did it get resolved at some point?