Appeals Committee. Disputed situations in tournaments.

Hello everyone!
Yesterday, during a ranked game with Outcast, an unpleasant situation occurred.
After the final battle in my favor, with a significant advantage in units and stats, my opponent surrendered, writing: "Wait, I still have an easy win here."

He then explained that I was penalized because I passed by the GO in the central treasure zone – one of the outposts – without killing it (the Necromancer's horses).

My explanation that the GO had already been killed by me on previous turns did not satisfy him, and he went to complain to the judges from AK.

I ask you to pass judgment based on my screenshot (I indicated the scheme of my actions):
https://ibb.co/d4i76k
and the save file of the entire game if needed:
http://dropmefiles.com/J6Teg

The GO is cleared – which means I can move past the horses.
I interpret my actions according to this rule:

Additional rules for transitions between zones:
- In order to exit your zone into the central treasure zone (zone 5), as well as to go from the central treasure zone to other zones, it is necessary to clear the corresponding GO. Using buggy passages between the central treasure zone and a specific zone is prohibited until the GO between these zones has been cleared.

If my actions violate the rules or are considered unfair play, please declare me defeated.