diff --git a/apps/game-api/src/app.test.ts b/apps/game-api/src/app.test.ts
index 9e55b90..9400d74 100644
--- a/apps/game-api/src/app.test.ts
+++ b/apps/game-api/src/app.test.ts
@@ -1031,6 +1031,68 @@ describe('game API simulation boundary', () => {
     );
   });
 
+  it('exports a Full Safe simultaneous tick containing a lost record', async () => {
+    let failingAgentId: string | undefined;
+    const app = createApp({
+      provider: {
+        mode: 'scripted-test',
+        configured: true,
+        async decide(observation): Promise<ProviderDecision> {
+          failingAgentId ??= observation.agentId;
+          if (observation.agentId === failingAgentId)
+            throw new AgentProviderError({
+              code: 'timeout',
+              message: 'Deadline exhausted.',
+              retryable: false,
+            });
+          return {
+            decision: { worldAction: { type: 'wait' }, summary: 'Wait.' },
+            metadata: {
+              provider: 'scripted-test',
+              model: 'lost-tick-export-test',
+              latencyMs: 0,
+            },
+          };
+        },
+      },
+    });
+    const tickResponse = await app.request('/api/simulation/tick', {
+      method: 'POST',
+    });
+    expect(tickResponse.status).toBe(200);
+
+    const response = await app.request('/api/simulation/experiment/export', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        agents: { mode: 'all' },
+        turns: { mode: 'entire-retained' },
+        outcomes: [
+          'accepted',
+          'rejected',
+          'provider-error',
+          'operator-skipped',
+          'lost-tick',
+        ],
+        actions: ['move', 'infect', 'capture', 'wait'],
+        communications: { channel: 'all', status: 'all' },
+        level: 'full-safe',
+      }),
+    });
+    expect(response.status).toBe(200);
+    const { document } = experimentExportResponseSchema.parse(
+      await response.json(),
+    );
+    expect(document.schemaVersion).toBe(10);
+    const lostTick = document.turns.find(
+      ({ outcome }) => outcome === 'lost-tick',
+    );
+    expect(lostTick).toBeDefined();
+    expect(lostTick).not.toHaveProperty('worldActionResult');
+    expect(lostTick).not.toHaveProperty('communicationResult');
+    expect(lostTick).not.toHaveProperty('diplomacyResult');
+  });
+
   it('archives the exact supplied generated artifact through an injected writer', async () => {
     const archiveExperimentExport = vi.fn(
       (document: ExperimentExportDocument) => ({
diff --git a/apps/game-api/src/simulation-service.test.ts b/apps/game-api/src/simulation-service.test.ts
index 0e86b6d..2732769 100644
--- a/apps/game-api/src/simulation-service.test.ts
+++ b/apps/game-api/src/simulation-service.test.ts
@@ -818,17 +818,74 @@ describe('SimulationService', () => {
         .getSnapshot()
         .agentMemories.filter(({ entries }) => entries.length > 0),
     ).toHaveLength(7);
-    const exported = simulation.generateExperimentExport({
-      ...exportRequest('minimal'),
-      outcomes: [
-        'accepted',
-        'rejected',
-        'lost-tick',
-        'provider-error',
-        'operator-skipped',
-      ],
-    });
-    expect(exported.tickSummaries).toEqual([
+    const lostTickOutcomes = [
+      'accepted',
+      'rejected',
+      'lost-tick',
+      'provider-error',
+      'operator-skipped',
+    ] as const;
+    const customWithResults = {
+      turnObservations: false,
+      personalityTextHistory: false,
+      nearbyAgents: false,
+      recentEvents: false,
+      recentPublicMessages: false,
+      recentDirectMessages: false,
+      recentControlChanges: false,
+      validationDetails: true,
+      resultingEvents: true,
+      providerUsageMetadata: false,
+      initialWorldState: false,
+      currentWorldState: false,
+      computedMetrics: false,
+      communications: false,
+      controlChanges: false,
+    };
+    const exports = [
+      simulation.generateExperimentExport({
+        ...exportRequest('minimal'),
+        outcomes: lostTickOutcomes,
+      }),
+      simulation.generateExperimentExport({
+        ...exportRequest('standard'),
+        outcomes: lostTickOutcomes,
+      }),
+      simulation.generateExperimentExport({
+        ...exportRequest('full-safe'),
+        outcomes: lostTickOutcomes,
+      }),
+      simulation.generateExperimentExport({
+        ...exportRequest('custom'),
+        outcomes: lostTickOutcomes,
+        custom: customWithResults,
+      }),
+    ];
+    for (const exported of exports) {
+      expect(experimentExportDocumentSchema.safeParse(exported).success).toBe(
+        true,
+      );
+      const lostTick = exported.turns.find(
+        ({ outcome }) => outcome === 'lost-tick',
+      );
+      expect(lostTick).toBeDefined();
+      expect(lostTick).not.toHaveProperty('worldActionResult');
+      expect(lostTick).not.toHaveProperty('communicationResult');
+      expect(lostTick).not.toHaveProperty('diplomacyResult');
+    }
+    const minimalAccepted = exports[0]!.turns.find(
+      ({ outcome }) => outcome === 'accepted',
+    );
+    expect(minimalAccepted).not.toHaveProperty('worldActionResult');
+    for (const exported of exports.slice(1)) {
+      const accepted = exported.turns.find(
+        ({ outcome }) => outcome === 'accepted',
+      );
+      expect(accepted).toHaveProperty('worldActionResult');
+      expect(accepted).toHaveProperty('communicationResult');
+      expect(accepted).toHaveProperty('diplomacyResult');
+    }
+    expect(exports[0]!.tickSummaries).toEqual([
       expect.objectContaining({
         providerCallCount: 8,
         aggregateDecisionLatencyMs: 37,
diff --git a/docs/TESTING.md b/docs/TESTING.md
index f374153..b869423 100644
--- a/docs/TESTING.md
+++ b/docs/TESTING.md
@@ -132,7 +132,7 @@ model compliance.
 - Shared schema tests cover authoritative whitespace trimming and 1/280/281-character boundaries, recipient IDs, typed public/direct events and rejected attempts, 12-entry public and six-entry directional direct observation bounds.
 - Shared schema tests cover open/uncontrolled and infected/controlled hex unions, controller validity, alliance-aware capture eligibility, territory scoreboards, gain/loss bounds, independent communication/diplomacy metrics, and export schema version 5.
 - Shared schema tests cover trimmed personality updates, empty/oversized/malformed values, update/restore response contracts, and typed mutation errors.
-- Shared schema tests cover optional provider usage and tiny costs, experiment identities/manifests/retention/configuration events, all export levels and filters, Custom dependencies, invalid empty/range/agent selections, previews, generated documents, and level-specific omissions.
+- Shared and service export tests cover optional provider usage and tiny costs, experiment identities/manifests/retention/configuration events, all export levels and filters, Custom dependencies, invalid empty/range/agent selections, previews, generated documents, level-specific omissions, and result-free lost-tick records in Minimal, Standard, Full Safe, and Custom exports.
 - World-engine tests cover all existing movement/infection/capture behavior plus public delivery, direct distances zero/one/three, distance-four/self/unknown rejection, message trimming, independent application, pre-action proximity, event ordering, and deterministic construction with unchanged personalities.
 - Agent-runtime tests inspect the model-agnostic OpenRouter text request, fixed trust instructions, flat sentinel normalization, fenced/prose-wrapped/trailing-comma JSON recovery, exact metadata-selected reasoning payloads, explicit model overrides, body-inclusive 75-second timeouts, cancellation, bounded diagnostics, secret non-leakage, and provider-name-independent mocked output.
 - Agent-runtime tests normalize successful/missing reasoning/cache/token/cost usage, retain known usage through malformed or unsupported decisions, and prove scripted zero cost.
diff --git a/packages/shared/src/index.ts b/packages/shared/src/index.ts
index a0bbe98..431a90c 100644
--- a/packages/shared/src/index.ts
+++ b/packages/shared/src/index.ts
@@ -3734,6 +3734,7 @@ export const experimentExportDocumentSchema = z
         });
       if (
         turn.outcome !== 'provider-error' &&
+        turn.outcome !== 'lost-tick' &&
         turn.outcome !== 'operator-skipped' &&
         (Boolean(turn.worldActionResult) !== results ||
           Boolean(turn.communicationResult) !== results ||