The concept of the ceasing to be a Imperial Family member was not brought about by the General Headquarters, as mentioned in ' The reinforcement regulations on ceasing to be a member of the Imperial Family' which was explained later, we must understand the concept as an extended policy towards the Imperial Family, which was applied to them since the Meiji period.
皇籍離脱という着想自体は、GHQにより新たに持ち込まれたものではなく、後述の「皇族ノ降下ニ関スル施行準則」に表現されているように、明治以来、皇族たちに対して一貫して採用されてきた政策の延長上に理解すべきものである。