Nie wiem, ale możliwe że była za długa przerwa od części 6 i było już trudno wszystkich razem zebrać, a wiadomo że musieli być i Lassard i Harris.

According to his autobiography, Bubba Smith had initially made a verbal agreement to reprise his role as Hightower. However, Marion Ramsey later called Bubba in tears, uncertain as to why she had not been asked to return. Bubba knew Marion was hurting financially, having already given her a small loan not long before. Bubba said he would see what he could do. When Bubba called the producers to ask if Marion could join the cast, he was told that Hooks could not be written into the script. In defense of Marion, Bubba made the decision to withdraw from the movie. In a peculiar case of life imitating art, this situation mirrors the scene in Akademia policyjna (1984), when Hightower is forced to leave the academy after standing up for Hooks.

https://www.imdb.com/title/tt0110857/trivia/?ref_=tt_trv_trv