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Use the per-tenant inventory to agree dispositions for conflicting or blank account, firm, player and alias names (PAR-501). Where SYSTEM labels must change, follow wiki/system-wallet-routing.md: preserve original routing identities using ops/system-wallet-routing/prepare-v42.sql before any rename or V40 retry. Review any failed-history/partial-object reconciliation explicitly; never guess keys, renumber history or silently bypass V40.
Done when the reviewed per-tenant plan has been verified on a restored clone, original SYSTEM account IDs/owners/balances remain unchanged, and normal migration through V42 succeeds. If no remediation is needed, attach that evidence. Actual production execution belongs to the coordinated cutover; no sensitive mappings in public receipts.