The recording is heavily truncated being originally compressed to 45 minutes.
An edition in 2005 added several numbers from the vaults.
Rumors persist that the entire show was recorded. These are just rumors and it is not believed that there is more material hidden away. It's known that there are several songs that producer David Geffen didn't like and wouldn't allow these to appear on the cast recording (in particular "Heavy", which he also tried to have cut from the film version).