They appear to have reverted three of your changesets: https://osmcha.org/changesets/140463707?filters=%7B%22users%22%3A%5B%7B%22label%22%3A%22user_20121521%22%2C%22value%22%3A%22user_20121521%22%7D%5D%2C%22date__gte%22%3A%5B%7B%22label%22%3A%22%22%2C%22value%22%3A%22%22%7D%5D%7D