It makes sense: in this case, the dynasty and the original version work, but "Shades of Darkness" does not, meaning the game versions are separated, as promised. It's just unclear why they are combined into one account.
All 4 games are in one package and launched from a single executable. And all campaigns are also on the same map.
I'm just waiting for them to finally send me a key so I can activate "Shades of Darkness". Otherwise, there is no separation.
Moreover, in Patch 2.1, new artifacts appear more often than others.
I've started playing "The Legend" while waiting for the key, and I found 3 Wind Sword amulets near the castle.