法令翻訳 http://www.japaneselawtranslat...amp;page=5

(退社に伴う定款のみなし変更)
第六百十条   第六百六条、第六百七条第一項、前条第一項又は第六百四十二条第二項の規定により社員が退社した場合（第八百四十五条の規定により社員が退社したものとみなされる場合を含む。）には、持分会社は、当該社員が退社した時に、当該社員に係る定款の定めを廃止する定款の変更をしたものとみなす。

Deemed Changes of Articles of Incorporation upon Withdrawal of Members
Article 610   In cases where a member withdraws pursuant to the provisions of Article 606, Article 607, paragraph (1), paragraph (1) of the preceding Article or Article 642, paragraph (2) (including the cases where a member is deemed to have withdrawn under the provisions of Article 845), a Membership Company is deemed to have effected a change in the articles of incorporation to abolish the provisions of the articles of incorporation relating to such member.