Yes, this is the only save file that remained from that attempt to start a walkthrough. I continued from it when I returned to this map.
https://transfiles.ru/4m6se
Thanks! Yes, the issue is most likely due to the HD mod. SoD_SP simply doesn't know how to fix bugs for AI vs AI battles that are different from regular bugs for the case of a player vs AI. I recently tested one of these bugs - the computer breaks through an army that it normally wouldn't be able to break through, even if we attack in quick combat mode or by entering "gosolo" in the console. This happens only when the computer attacks and in no other way.