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The terrain should be HD+; the original is too cluttered with obstacles.
Wow, what an abuser! :D
Regarding functionality, I recently discovered that you can use SoD_SP to start a battle with a fixed random seed and then switch to the original random seed where needed. However, it seems that some time must pass after the switch.
You can also check out this map. It's for HotA, but they mention that the battlefields have changed in HotA, so the map might be more difficult in the current version, or even completely broken.