It is true also that the introduction to the first edition of the missal of Pope Paul VI had to be withdrawn because it so poorly expressed the true nature of the Mass as a sacramental sacrifice.
I believe that Mons. Schuler refers to a change in the preliminary part of the Pauline Missal: from memory, a reference to sacrifice was added to the section that describes the Mass as a sacred Synaxis
The Lord’s Supper, or Mass, is a sacred synaxis, or assembly of the people of God gathered together under the presidency of the priest to celebrate the memorial of the Lord. (Pope Paul VI, Institutio Generalis, §7, 1969 version)
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