I'm not sure if this is the case for the screenplay, but for the actual play the playwright (who also wrote the screenplay) rewrote the ending at least 6 times

I'm not sure if this is the case for the screenplay, but for the actual play the playwright (who also wrote the screenplay) rewrote the ending at least 6 times over 20 years and multiple productions. The version of the play I read is similar to what you describe as the original theatrical cut.