Posted: the seal, and unposting — Good to know
• Deleting a posted record is refused everywhere, including bulk delete — unpost first. Bulk operations skip sealed rows and say how many they skipped.
• Imports that update existing rows will report sealed rows as skipped rather than half-updating a batch.
• Cascade sealing follows only the Relation fields named in the policy, one hop — grandchildren need their own policy or their own naming.
• Unposting the parent releases the children posted with it in the same act — records posted separately, with their own stamp, stay sealed.