Well thin you have folks like me, that see Law and know that al has been given by HaShem, and it simply can't be separated in that manner. A lot of the problem at lest in my mind is the use of the phrase Mosaic law. In our study group we did our best to find where that phrase got started. Our RCC member, is the one that came up with the idea, ( note, any that can't read please keep in mind this is NOT repeat NOT proven as fact) that it may have started in Pauls time. Then gained ground when the RCC became more powerful. His reasoning behind it is that if one could read some the oldest forms of the Bible as it was in the first canon of 350AD give or take a bit, they would read one thing. Then as time moved on, he thinks it was around 1000AD or so, the Law was changed by the Pope, and the 4th C was removed. they then split the 1st so they still had 10. When the Bible became available to everyone, they had to change change it back.
Now I know that is just 6 people looking for a lost foot note in history. We are all willing to say we don't really know for sure. Yet our RCC priest, knows for sure that at one point the law had been changed by a Pope. He even showed us a print out of 3 different sets. So I am not going to say he is wrong. I am sure that if his name was to get out, he would loss his job over it. Just as I am also sure that He attends a Baptist church service every Sunday night.
The point being, that once we give into teh removal of any part of HaShem's Law, then we may as well go ahead and remove them all. As to the parts that we can show from HIs Word He removed, well that's not us removing them.