Each cloture vote only covers one item. The reason all these amendments are being held to 60 votes for passage is to avoid going through cloture for each amendment. That same “option,” either 60 votes straight up, or go through cloture, attaches to final passage of EACH amendment, and final passage of whatever bill remains after amendment.
My question still remains. If NO amendments are agreed upon to change the original bill (which has already passed cloture) is only 51 votes then needed to pass an unamended bill?