HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

Yes, they talked about these buttons. Apparently, some information didn't get through. Either there are 2 buttons with a new transfer mechanism, or one – with the old one. In the first post, there is information about what needs to be done: edit HiRez.ini in the line Two 'Check' buttons in Swap Manager = 0, and you will get the familiar mechanism. So, take a look.

I saw this option in the ini file and disabled it there. It's just my opinion, but it would be convenient if there were 2 buttons, but the right one would leave the focus on the left hero (as without the mod), and the left one on the right. With the option, the right one focuses on the right, and the left one on the left. Graphically, this looks logical, but it contradicts the habit of the hands.

So, in fact, there are 9 angels now? This split bug is also in SoD, but it is only visual. Although this may also be a mod bug.

Yes, in fact, there are 9. I had to fire one.

Moreover, in the previous attempt, it showed -1 instead of +1 in the right window, and there were 7 angels. I had to load an autosave.

I doubt that this is a SoD bug; otherwise, it would have been known for a long time.

When I was given Tetans for free in Warlords, I didn't refuse to take them.

Well... you even have a corresponding nickname :)

P.S.: This must be a game on Anarchy, since Kira is in the main role?

Yes, we are slowly playing with Yama... that's why I installed the mod.