Well, you have the which arrived in 1859. You have the Wanderer in 1858 and no doubt many more. Southerners were importing slaves from outside the U.S. long after Congress outlawed it, and the Confederate Constitution guaranteed imports. So anyone who thinks that it wouldn't have continued in a Confederate state is just fooling themselves.
Your links are to Wikipedia, which is fine.
The links do salute the legends even as they give reason to question them.
For example, one link includes this:
“Whether the Clotilda story is true, and to what extent it is based on any real occurrence, may never be known. That is why Wanderer is still considered the last documented slave ship to reach America. As historian David M. Potter noted in his Pulitzer Prize-winning history, The Impending Crisis: 1848–1861,[5] “Apparently everyone in the South in the late 1850s knew someone who knew someone else who had seen a coffle of slaves direct from Africa. But no one who had seen them has left any testimony. One ship, The Wanderer, did bring a cargo of slaves from Africa in 1858, and this bizarre event was apparently reenacted many times in the imagination.””
The link to the Wanderer, a suspicious New York ship built for speed and long voyages, includes this shock about the trial of the illegal importers: “The US prosecutor, Henry R. Jackson, became a major general in the Confederate States Army and one of the defendants, John Egbert Farnum, became a colonel and brevet brigadier general in the Union Army.”
But, your distraction from the earlier debate served its purpose: distraction.