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Export-only originally used unanimity as a conservative substitute for the CE/RNG sidecar machinery. That made sense before Export had its own signed ExtendedPosition field and exportSigSetHash convergence gate. Now Export sidecars are signed and converged independently of RNG, so a quorum-aligned exportSigSetHash plus verified active-view signature quorum is deterministic enough for Export-only mode. Keeping unanimity would let one active validator veto an otherwise converged export round. Update CSF and testnet coverage to treat Export-only the same way: one missing/conflicting signer in a 5-validator network succeeds at 4/5, while below-quorum still retries or expires.