With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Baháʼí notions of progressive religious revelation result in their accepting the validity of the well known religions of the world, whose founders and central figures are seen as Manifestations of God. Religious history is interpreted as a series of dispensations, where each "manifestation" brings a somewhat broader and more advanced revelation that is rendered as a text of scripture and passed on through history with greater or lesser reliability but at least true in substance, suited for the time and place in which it was expressed. Specific religious social teachings (for example, the direction of prayer, or dietary restrictions) may be revoked by a subsequent manifestation so that a more appropriate requirement for the time and place may be established. Conversely, certain general principles (for example, neighbourliness, or charity) are seen to be universal and consistent. In Baháʼí belief, this process of progressive revelation will end; it is, however, believed to be cyclical. Baháʼís do not expect a new manifestation of God to appear within 1000 years of Baháʼu'lláh's revelation.
text_B: Would a teacher of the Baháʼí faith teach that at some point their spiritual beliefs will no longer change?
YES.