The House of Exorcism

If you listen to Alfredo Leone's commentary on House of Exorcism, you'll understand, if not approve, of what Leone did to salvage his investment. His re-edit and added footage accomplished his goal. He avoided taking a huge loss on Lisa and The Devil. Business before art.

Bava of course did not approve of his master work being mutilated and that ultimately led to a split in their business relationship. Leone states in his commentary that his respect for Bava remained. According to Leone, Bava did not care for nudity and swearing and would not stay on the set when those new scenes were shot with Elke and Carmen Silva as the naked temptress incarnation of Elke. I always found this interesting about Bava. He would film the most horrendous violence and gore in perverse scenarios (mainly directed at women like most filmmakers) but balked at cursing and exposed female flesh.

The takeaway from this is that Lisa and The Devil was produced and exists independently and the commercial salvage job called House of Exorcism made money.