A new bug report was recently issued by User:메이 from https://ko.wikipedia.org/w/index.php?title=위키백과:사랑방_(기술)/2018년_11월
that the User:InternetArchiveBot's contributions still produce the invalid date format such as YYYY년 MM월 DD일 which should be simply replaced with YYYY-MM-DD.
For example, 보존날짜=2013년 07월 02일 needs to be replaced with either
보존날짜=2013-07-02 (YYYY-MM-DD ISO-8601 standard)
or
보존날짜=2013년 7월 2일 (From Jan through Sep, we don't add pad 0 to the left of the months. It applies to the days as well; this is comparable to the English context that July 2, 2013 is valid, not July 02, 2013.)
For details, please refer to the following diffs:
https://ko.wikipedia.org/w/index.php?diff=22907169
https://ko.wikipedia.org/w/index.php?diff=22911557
https://ko.wikipedia.org/w/index.php?diff=22912247
According to the last bug report, the date issue has been confirmed to be fixed by Cyberpower678, but the problem still seems to persist.
https://ko.wikipedia.org/wiki/%EC%9C%84%ED%82%A4%EB%B0%B1%EA%B3%BC:%EC%82%AC%EB%9E%91%EB%B0%A9_(%EA%B8%B0%EC%88%A0)/2018%EB%85%84_9%EC%9B%94#InternetArchiveBot%EC%9D%98_%EC%9E%91%EB%8F%99%EC%97%90_%EB%94%B0%EB%A5%B4%EB%8A%94_%EB%82%A0%EC%A7%9C_%EC%98%A4%EB%A5%98%EC%9D%98_%EB%B0%9C%EC%83%9D%EC%97%90_%EB%8C%80%ED%95%B4%EC%84%9C