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Greetings, Ughrul.
Regarding the maps (Emerald Mountain), "Backward compatibility with the original Lords of War is possible, but not without issues, especially on arenas with fixed obstacles (Anvil of Arkath, Broken Bridge, Joust, etc.)". The collection is designed for Might and Magic: Heroes 5.5, where the battlefields were enlarged.
Regarding the dwarven castle (Anvil of Arkath), this is already unpleasant. I didn't have this problem; I'll see what can be done about it. If anyone else has the same or a similar problem, please let me know.
I suspect that some third-party mods are conflicting with the castle, the ice floes, and other objects that have disappeared in the screenshots, although I hardly understand how and why. In any case, after downloading the mod on a second computer (where the only mod installed is M&MH5.5), I didn't notice any malfunctions, like those in the photos. By the way, what about the maps from the collections created by Zenithale and Erythrocytosis: Academy Square, Border of Muspelheim, Broken Bridge, Dwarven Bridge, Joust, Talgath?