Deznight
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As it turns out, these "saves" cannot be loaded after the patch (they loaded for me at first, but now the game doesn't recognize them at all).
The saves we are used to (with the .sav extension) are located here:
C:\Users\username\AppData\Roaming\uplay\CODEX\Saves\HeroesVII
The thumbnails and screenshots taken at the time of saving are stored at c:\Users\USERNAME\Documents\My Games\Might & Magic Heroes VII\MMH7Game\Savegames\.
And in C:\Users\username\AppData\Roaming\uplay\CODEX\Saves\HeroesVII,
saves are only found in the pirated version. In the licensed version, they seem to be in the game folder or in the Uplay folder, somewhere there.
And they are different, lol. Even the extension is different.