Mirza Yahya was nominated by the Bab
Mírzá Yaḥyá was nominated by the Báb to serve as a figure-head for the Bábí community pending the imminent manifestation of the Promised One. At the instigation of Siyyid Muḥammad-i-Iṣfahání (see note 192), Mírzá Yaḥyá betrayed the trust of the Báb, claimed to be His successor, and intrigued against Bahá’u’lláh, even attempting to have Him murdered. When Bahá’u’lláh formally declared His Mission to him in Adrianople, Mírzá Yaḥyá responded by going to the length of putting forward his own claim to be the recipient of an independent Revelation. His pretensions were eventually rejected by all but a few, who became known as Azalís (see note 177).(Kitáb-i-Aqdas, note 190)
So on one hand, the Research Department of the Universal House of Justice testifies that Mirza Yahyá "was nominated by the Báb to serve as a figure-head for the Bábí community" and on the other, claims that he "betrayed the trust of the Báb" by claiming "to be His successor". WTH?
What is equally if not more confusing is that they accuse Mírzá Yahyá of claiming to be a Manifestation of God. Ummm if his argument against Bahá'u'lláh was that the next Manifestation - He Whom God shall manifest - is not prophesied to arise for at least 1511 years, how on earth did he claim to be one?