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Library / First Principles Framework (FPF) - Core Conceptual Specification
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F.12:14 - Migration notes

  1. Promise revision. Keep the old promise-content identity, evaluation results, and status assertions; evaluate the new claim separately.
  2. Monitor change. State whether the new observation model directly measures the promised characteristic or needs a separately defined indicator relation; preserve past evidence identity.
  3. Scope correction. Retire a result or status assertion about the wrong Work or population and issue a corrected evaluation rather than redefining the promise.
  4. Scale and unit change. Apply the direct conversion and measurement relations; use F.9 only when local meanings also differ.
  5. Population refinement. Treat per-region, per-zone, or per-episode changes as explicit promise or evaluation changes.
  6. Indicator retirement. Prefer direct measurement when available; keep prior indicator-dependent results, status assertions, and evidence uses with their original limits.