Here Pope John Paul argues two points in his document "Dies Domini"
1. That the TEN Commandments (all TEN... not just NINE ) still remain. What does that mean about the SABBATH Commandment? gone - or remains? or bent to point to??
2. In the second quote John Paul II Refers to the OT Sabbath as the LORD's Day -
Pope John Paul II
Dies Domini pt 13 -
"the Sabbath ...is therefore rooted in the depths of God's plan. This is why unlike many other laws - it is not within the context of strictly cultic (Jewish) stipulations but within the Decalogue the "ten words" which represent the very pillars of moral life inscribed on the human heart!! In setting this commandment within the context of the basic structure of ethics, Israel and then the church declare that they consider it not just a matter of community religious discipline but a defining and indelible expression of our relationship to God, announced and expounded by biblical revelations.
Dies Domini
From the Sabbath to Sunday
18. Because the Third (the Sabbath) Commandment depends upon the remembrance of God's saving works and because Christians saw the definitive time inaugurated by Christ as a new beginning, they made the first day after the Sabbath a festive day, for that was the day on which the Lord rose from the dead. The Paschal Mystery of Christ is the full revelation of the mystery of the world's origin, the climax of the history of salvation and the anticipation of the eschatological fulfilment of the world. What God accomplished in Creation and wrought for his People in the Exodus has found its fullest expression in Christ's Death and Resurrection, though its definitive fulfilment will not come until the Parousia, when Christ returns in glory. In him, the "spiritual" meaning of the Sabbath is fully realized, as Saint Gregory the Great declares: "For us, the true Sabbath is the person of our Redeemer, our Lord Jesus Christ".(14) This is why the joy with which God, on humanity's first Sabbath, contemplates all that was created from nothing, is now expressed in the joy with which Christ, on Easter Sunday, appeared to his disciples, bringing the gift of peace and the gift of the Spirit (cf. Jn 20:19-23). It was in the Paschal Mystery that humanity, and with it the whole creation, "groaning in birth-pangs until now" (Rom 8:22), came to know its new "exodus" into the freedom of God's children who can cry out with Christ, "Abba, Father!" (Rom 8:15; Gal 4:6). In the light of this mystery, the meaning of the Old Testament precept concerning the Lord's Day is recovered, perfected and fully revealed in the glory which shines on the face of the Risen Christ (cf. 2 Cor 4:6). We move from the "Sabbath" to the "first day after the Sabbath", from the seventh day to the first day: the dies Domini becomes the dies Christi!
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The Catholic Commentary on the Baltimore Catechism post Vatican II - argues the SAME two points.
1965 -- first published 1959
(from "The Faith Explained" page 243
"we know that in the O.T it was the seventh day of the week - the Sabbath day- which was observed as the Lord's day. that was the law as God gave it...'remember to keep holy the Sabbath day.. the early Christian church determined as the Lord's day the first day of the week. That the church had the right to make such a law is evident...
The reason for changing the Lord's day from Saturday to Sunday lies in the fact that to the Christian church the first day of the week had been made double holy...
nothing is said in the bible about the change of the Lord's day from Saturday to Sunday..that is why we find so illogical the attitude of many non-Catholic who say they will believe nothing unless they can find it in the bible and yet will continue to keep Sunday as the Lord's day on the say-so of the Catholic church
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You have argued that in your view as a Catholic these two Catholic sources are wrong and you are right.
You are free to do that.