Dear OP,
First and foremost, you have to understand that in the SDA system, there are some parts of the OT "Law" that they believe are still "in effect".
They tend to forget to "Whom" was the "Torah" specifically addressed to when God gave it on Mt. Sinai.
We have, from the First Apostolic Council, in Jerusalem, around AD 40, what they said from the "Torah" applied to Gentile Christians. (cf. Acts 15:13-20)
Also, remember that nobody knew the "Torah" better than Jesus. He was, after all, co-author. Yet in the Gospel records, we see Jesus doing all sorts of things on the "Sabbath".
He even gave us examples of what we should do when certain situations would arise on the Sabbath.
Evidently, there are not any SDA's who own a dairy farm. 2x a day, 7 days a week, dairy cows must be milked. You cannot put off one day just because its "Sunday, or Saturday".
If you live out in the country, far from a fire department, and your neighbors house catches on fire, are you going to ignore it because its a "Sabbath"? Of course not. Love thy brother! If there house is on fire, grab a hose and help put it out or help his family escape.
"But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, Meekness, temperance: against such there is no law." -Gal. 5:22-23 (KJV)
What the SDA's forget, is the "spirit" of the Law. No ritual "Law observance" will get you in heaven or earn you any rewards. (In fact, Jesus rebuked the Pharisees for doing this exact same thing!) The "Spirit" of the 4th commandment is to keep one day in seven as your "Sabbath", your day of rest from your earthy work and to worship Him.
There is also:
"Render therefore unto Caesar the things which be Caesar's, and unto God the things which be God's." -Lk. 20:25 (KJV)
Now for a long while, my Caesar, (my job) required me to work on Sundays. If I were a SDA, I'd have to either refuse to work on the Sabbath, or find another job.
In fact, my church knew that I worked 11pm to 7am on Saturday nights and rarely could make it Sunday morning services. But I was there any other time the church doors were open. And, after some time, I was also asked to become a Deacon, and was later on, licensened to preach by my church.
Following standard SDA practices, all that would have eliminated from becoming a Deacon, or even preaching.
So what will I eventually be judged on, how well I have "ritually' kept the 4th commandment? Or keeping the "spirit" of the law? (1 day in seven to rest and worship)
God Bless
Till all are one.