This exact situation actually happened to me. I wiped a sky base. Server rolled back, and the player logged in after the rollback. I thought for sure that they were just going to move everything. But luckily they hadn’t logged in the night before and saw the wipe, so I wiped it again. I’m sure not everyone was so lucky as me. Sucks I know. I lost many thralls but the only thing I cared about was taking that sky base out.