C.20:5.4 - Canon revision, same field, and another field

HazardCausalityCanon-v6 changes claim content and is another C.2.1 episteme. Historical continuation from v5 is tested separately. The same SafetyEngineering-SE can continue if its C.20 rule permits that replacement and the required contribution meanings, whole-forming couplings, boundary, and whole characteristic persist. The old part occurrence ends and the new one begins; a description or evidence window does not decide those intervals.

If the replacement rejects the field’s former causal object, changes the practice-knowledge feedback rule, and changes the field boundary beyond permitted continuity, the same-discipline claim fails. The project then tests another candidate and uses B.2 only if a receiving use needs a whole-reidentification conclusion. A new canon edition, renamed department, or republished card alone decides neither branch.