Without sounding blasphemous, the Bible has been edited too many times by man, IMHO. Anyway, why not let the mystery be?
Either you believe it is the Word of God or you don’t. If you don’t, then I understand why you would be incredulous. However, creationists do believe the Bible in matters of doctrine, theology, salvation, morals, history, etc. Thus, if the Bible says such and such happened at a given time, then the bible-believing Christian believes that whatever evidence remains from said happening will fit with the biblical description of the same.
PS Did you give the link I sent you a quick read? What did you think of Einstein’s General Relativity/Time Dilation allowing for the Earth to be thousands of years old, and distant stars to be billions of years old, and yet both owe their existence to the SAME creation event???