If the battle verse that the user has open while he/she becomes banned was the reason that they were banned, they shall lose that battle. If the battle has nothing to do with the reason they're banned, then it will still end as any other normal battle will.
If the battle verse that the user has open while he/she becomes banned was the reason that they were banned, they shall lose that battle. If the battle has nothing to do with the reason they're banned, then it will still end as any other normal battle will.