Author Omar Khalidi's book "FROM TORRENT TO TRICKLE: INDIAN MUSLIM MIGRATION TO PAKISTAN, 1947—97" has several important facts about the migration of Indian Muslims to Pakistan. Although the later migrations fell to a trickle in the 1990s, it still pointed to the kind of conditions prevailing in India that were forcing them to move to Pakistan. Most of these migrations resulted from discrimination and a general anti-Muslim environment prevailing in India. Link: https://www.punjabpartition.com/single-post/2019/01/06/Muslim-Migration-from-India-to-Pakistan-continued-well-after-Partition