In game 60209 (2v2 Tournam_R2_A5), I lost the connection while attacking a lone orc with an orc, yeti and wolf in a Batlle in Turn 27 on Swamp (my first Attack on Swamp in that turn).
Upon reloading, the battle replay showed that I killed the enemy Orc without any loss of my own, but on the map, my own orc who hade been on the front is missing somehow. So somehow the units on the map and the battle replay are out if sync. However, we continued playing on, so maybe there is nothing to check here now?!