Talk:Upgrades/@comment-177.41.55.67-20161106211941/@comment-30129838-20161106213514

Yes, upgrading into Kiwame makes them reset to the base stats of their Kiwame form and you have to refine them again to reach their max stats.

I do not understand your last question. You cannot undo refining. Once your swords are refined, there's no way to reverse the process.