You are responding as if you had not read what they state.
"From the beginning of the world to the resurrection of Christ the appointed day was the last day of the week. After the resurrection of Christ it was changed to the first day of the week, which is called the Lord’s Day. This day is to be kept to the end of the age as the Christian Sabbath, since the observance of the last day of the week has been abolished."
They agree that the Sabbath as given in scripture
1. Is for all mankind
2. Was given from the creation of mankind in Eden
3. Is included in the moral law of God that defines what sin is
4. Is the same weekly 7th day that I have been discussing.
5. Is a weekly day of worship - holy convocation.
I differ with their claim that it got edited to point to week-day-1 after the cross - since all NT references to "Sabbath" as a weekly day of worship is a reference "still" to the 7th day. But only one difference while you appear to differ with everything they said? or are you just not reading it since you claim not to care about their view as you said before?