17 lines
580 B
Markdown
17 lines
580 B
Markdown
# ADR-0037: Migration validation and rollback retention
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## Status
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Accepted in M13 on 2026-08-26.
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## Decision
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Cutover requires an immutable validation snapshot. Technical LAB eligibility and project-production
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eligibility are separate. The exact prior external identity is snapshotted before switch and remains
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cleanup-blocking through the configured rollback window.
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## Consequences
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Completeness alone cannot promote a model. Isolated mechanics can be rehearsed despite documented
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project evidence gaps, without implying production fitness or sacrificing rollback evidence.
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