During migration make sure you're using supported WhatsApp version (2.18.248)

If WhatsApp does not prompt to restore from LOCAL backup, like below, we suggest to:

  1. disable WhatsApp Google Drive backups from PC (not from phone) - you can enable them back after iPhone messages have been imported
  2. make sure you're using supported WhatsApp version

If you're updating WhatsApp after migration, here's how to fix WhatsApp issues with local backup restore.