Because one of the conditions that the Southern Court demanded when Takauji surrendered was to unify Imperial succession to the Southern Court, the legitimacy of the Imperial succession of the Northern Court was weakened.
尊氏が南朝に降ったときに南朝が要求した条件に、皇位は南朝に任せるという項目があったため、北朝の皇位の正統性が弱められる結果となった。