Many Christians do not literally believe in the Garden of Eden or Noah's Flood, but the Torah also includes the Exodus from Egypt and the Jewish Laws. For me, the story of Exodus is not only unbelievable - it is also a tedious story expressing a narrow-minded tribal perspective. And the Jewish Laws are equally uninspiring. However, Moses and the Laws are absolutely central to Judaism, and Jesus was Jewish. Jesus speaks of Moses, and Jesus even talks with Moses in the Transfiguration.
How do you Christians fit the Torah into your system?
Hi! I see that you are an agnostic and that helps to understand your question better.
All the Christians that I know, DO believe 100% that the Bible (old and new covenants) are literal, factual and historical. I don't know any who disbelieve the accounts of the Garden of Eden or Noah's flood.
Now, as to your more specific question, about removing Moses and the Mosiac Law from Christian beliefs, again, the ones I know do not consider these allegories, but facts that no longer apply to them, since the Mosaic Law was replaced by the New Covenant ushered in by Yeshua (Jesus).
So, for those that you know who disbelieve the Old Covenant as truth, I would question how they view the New Covenant. If they believe it is truth, historical and factual, they must believe the Old is as well, because the Old is quoted often through the New as fact, even referring to the Garden and Noah's flood and the Mosaic Law, all as fact.
If they DON'T believe the New Covenant is fact, and specifically G-d's inspired Word (2 Timothy 3:16), then I I question whether they are, in fact, Christians, because they must believe in the REAL Jesus (the one of the Bible), not the many variations made up by humans floating around out there.
Bottom line, only G-d knows who is and who isn't a born again Believer, but if someone does not accept the New Covenant, I would say there is question. If they accept the New and reject the Old, they just need to ask G-d to show them.
Does that help any?