No, I am saying that in the Bayan, only previous dispensations have any substantial prophetic relevance towards the current dispensation.
Aka, the Torah and Tanakh is only relevant to Christianity, the Gospels are only relevant to Islam (despite Muslim belief in Tahrif which is it's own subject), the Qur'an and Hadith are only relevant to the Bayan, and the Bayan is only relevant to the dispensation of He Whom God Shall Make Manifest.
I see It is illogical to say the gems of past dispensations are not reborn in the new Message, as that Message came from the one previous and the one previous and the one previous, etc.
I see science helps in the understanding of this concept. We all have common ancestors, our genes still connected to our source, we take on aspects of what was gone before and evolve with new traits that can be passed on to future generations.
Baha'u'llah in contrast borrows from all of them and not the one most relevant to the true claimant of the promised one, in fact he mostly ignores the Bayan except for when it suits him.
Do you get me now?
Which the Bab allows for in the Bayan. It is warned that a Babi should not cling to the outward meaning of the Bayan.
"...At the time of the manifestation of Him Whom God shall make manifest everyone should be well trained in the teachings of the Bayán, so that none of the followers may outwardly cling to the Bayán and thus forfeit their allegiance unto Him. If anyone does so, the verdict of ‘disbeliever in God’ shall be passed upon him.
I swear by the holy Essence of God, were all in the Bayán to unite in helping Him Whom God shall make manifest in the days of His Revelation, not a single soul, nay, not a created thing would remain on earth that would not gain admittance into Paradise. Take good heed of yourselves, for the sum total of the religion of God is but to help Him, rather than to observe, in the time of His appearance, such deeds as are prescribed in the Bayán. Should anyone, however, ere He manifesteth Himself, transgress the ordinances, were it to the extent of a grain of barley, he would have trangressed His command.
Seek ye refuge in God from whatsoever might lead you astray from the Source of His Revelation and hold fast unto His Cord, for whoso holdeth fast unto His allegiance, he hath attained and will attain salvation in all the worlds. ‘Such is the bounty of God; to whom He will, He giveth it, and God is the Lord of grace abounding.’ 1 (1 = Qur’án 57:21)"
Bahá'í Reference Library - Selections From the Writings of the Báb, Page 85
So, it was the rejection of Baha'u'llah by some Babi, that fulfilled that verse, and interestingly I also have concluded that some, if not most of the Baha'i, have also failed to adequately respond to the message of Baha'u'llah, thus that same verdict is also applicable.
Regards Tony