Would be cool if even the Socorro scene was included,but it's said to never have been included in the italian print at any time.
This scene is described in Christopher Frayling's book "Spaghetti Westerns, from Karl May to Sergio Leone", Frayling says the scene was shot but not included in the film.
He doesn't say the scene was lost or never completely filmed, you get the impression he saw the scene even at some point. He describes all the scenes that were left out from GBU, the grotto scene and so on.
Today they say the Socorro scene is lost forever, only some stills and some shots from the French trailer have survived.