On these two items mentioned, yes. Read carefully.

1. Whether or not race objectively determines inferiority.

2. Whether or not this country always supported slavery.

On these two items, opinions remain true to the original parties' opinions regardless of whether or not they swapped.

I'm not going to debate whether or not they swapped overall because that's entirely subjective regarding what constitutes a swap officially. That would be a waste of time. I'm a scientist, not a cheerleader. I frankly don't care outside of the two items relevant to the discussion. And in these two items they didn't swap.