diff --git a/src/codex/quota-auto-refresh.ts b/src/codex/quota-auto-refresh.ts
index ae8470a877..f4bebebdad 100644
--- a/src/codex/quota-auto-refresh.ts
+++ b/src/codex/quota-auto-refresh.ts
@@ -1,6 +1,7 @@
 import { mutatePersistedConfig } from "../config";
 import { registerStateSweepAfterTick } from "../lib/state-store-sweeper";
 import { isCanonicalOpenAiForwardProvider, OPENAI_CODEX_PROVIDER_ID } from "../providers/openai-tiers";
+import { normalizeResetAt } from "../providers/quota-wire";
 import { providerCodexAccountMode } from "../providers/registry";
 import type { OcxConfig } from "../types";
 import { isSelectableCodexPoolAccount } from "./account-id";
@@ -18,6 +19,7 @@ export const FIVE_HOUR_WINDOW_SECONDS = 5 * 60 * 60;
 const RETRY_MS = 5 * 60_000;
 const CONCURRENCY = 4;
 
+/** Completed/due markers use epoch milliseconds; persisted legacy markers may use seconds. */
 export type CodexQuotaAutoRefreshWindows = { fiveHour?: number; weekly?: number };
 
 export interface CodexQuotaAutoRefreshStatus {
@@ -41,11 +43,6 @@ let inFlight: Promise<void> | null = null;
 const completedByAccount = new Map<string, CodexQuotaAutoRefreshWindows>();
 const retryAfterByAccount = new Map<string, number>();
 
-function resetAtMs(resetAt: number): number {
-  // WHAM reports seconds; quota parsed from response headers may already be milliseconds.
-  return resetAt < 100_000_000_000 ? resetAt * 1000 : resetAt;
-}
-
 export function codexQuotaAutoRefreshStatus(
   config: OcxConfig,
   accountId: string,
@@ -71,20 +68,22 @@ export function dueCodexQuotaAutoRefreshWindows(
   if (!quota) return null;
   const saved = config.codexQuotaAutoRefresh?.[accountId];
   const due: CodexQuotaAutoRefreshWindows = {};
+  const shortResetAt = normalizeResetAt(quota.shortResetAt);
+  const weeklyResetAt = normalizeResetAt(quota.weeklyResetAt);
   if (saved?.fiveHour === true
     && quota.shortWindowSeconds === FIVE_HOUR_WINDOW_SECONDS
-    && typeof quota.shortResetAt === "number"
-    && resetAtMs(quota.shortResetAt) <= now
-    && saved.lastFiveHourResetAt !== quota.shortResetAt
-    && completed?.fiveHour !== quota.shortResetAt) {
-    due.fiveHour = quota.shortResetAt;
+    && shortResetAt !== undefined
+    && shortResetAt <= now
+    && normalizeResetAt(saved.lastFiveHourResetAt) !== shortResetAt
+    && normalizeResetAt(completed?.fiveHour) !== shortResetAt) {
+    due.fiveHour = shortResetAt;
   }
   if (saved?.weekly === true
-    && typeof quota.weeklyResetAt === "number"
-    && resetAtMs(quota.weeklyResetAt) <= now
-    && saved.lastWeeklyResetAt !== quota.weeklyResetAt
-    && completed?.weekly !== quota.weeklyResetAt) {
-    due.weekly = quota.weeklyResetAt;
+    && weeklyResetAt !== undefined
+    && weeklyResetAt <= now
+    && normalizeResetAt(saved.lastWeeklyResetAt) !== weeklyResetAt
+    && normalizeResetAt(completed?.weekly) !== weeklyResetAt) {
+    due.weekly = weeklyResetAt;
   }
   return due.fiveHour === undefined && due.weekly === undefined ? null : due;
 }
@@ -139,8 +138,10 @@ function retryPendingMarkers(
   for (const [accountId, completed] of completedByAccount) {
     const saved = config.codexQuotaAutoRefresh?.[accountId];
     if (!saved) continue;
-    if ((completed.fiveHour === undefined || saved.lastFiveHourResetAt === completed.fiveHour)
-      && (completed.weekly === undefined || saved.lastWeeklyResetAt === completed.weekly)) continue;
+    if ((completed.fiveHour === undefined
+      || normalizeResetAt(saved.lastFiveHourResetAt) === normalizeResetAt(completed.fiveHour))
+      && (completed.weekly === undefined
+        || normalizeResetAt(saved.lastWeeklyResetAt) === normalizeResetAt(completed.weekly))) continue;
     persist(config, accountId, completed);
   }
 }
diff --git a/tests/codex-integration/codex-quota-auto-refresh.test.ts b/tests/codex-integration/codex-quota-auto-refresh.test.ts
index aa453ae700..4c46a0080b 100644
--- a/tests/codex-integration/codex-quota-auto-refresh.test.ts
+++ b/tests/codex-integration/codex-quota-auto-refresh.test.ts
@@ -116,8 +116,8 @@ describe("Codex quota window auto refresh", () => {
   test("accepts reset timestamps in seconds or milliseconds and ignores completed windows", () => {
     const cfg = config();
     expect(dueCodexQuotaAutoRefreshWindows(cfg, "pool-a", quota(), NOW)).toEqual({
-      fiveHour: RESET_SECONDS,
-      weekly: RESET_SECONDS,
+      fiveHour: NOW,
+      weekly: NOW,
     });
     expect(dueCodexQuotaAutoRefreshWindows(
       cfg,
@@ -134,6 +134,62 @@ describe("Codex quota window auto refresh", () => {
     )).toBeNull();
   });
 
+  test.each([
+    [RESET_SECONDS, NOW],
+    [NOW, RESET_SECONDS],
+  ])("deduplicates saved and completed markers across units (%i -> %i)", (marker, observed) => {
+    const cfg = config();
+    const snapshot = quota({ shortResetAt: observed, weeklyResetAt: observed });
+    expect(dueCodexQuotaAutoRefreshWindows(cfg, "pool-a", snapshot, NOW, {
+      fiveHour: marker,
+      weekly: marker,
+    })).toBeNull();
+    cfg.codexQuotaAutoRefresh = {
+      "pool-a": { fiveHour: true, weekly: true, lastFiveHourResetAt: marker, lastWeeklyResetAt: marker },
+    };
+    expect(dueCodexQuotaAutoRefreshWindows(cfg, "pool-a", snapshot, NOW)).toBeNull();
+    expect(dueCodexQuotaAutoRefreshWindows(cfg, "pool-a", quota({
+      shortResetAt: RESET_SECONDS + 1,
+      weeklyResetAt: NOW + 1000,
+    }), NOW)).toBeNull();
+    expect(dueCodexQuotaAutoRefreshWindows(cfg, "pool-a", quota({
+      shortResetAt: RESET_SECONDS + 1,
+      weeklyResetAt: NOW + 1000,
+    }), NOW + 1000)).toEqual({ fiveHour: NOW + 1000, weekly: NOW + 1000 });
+  });
+
+  test.each([
+    [RESET_SECONDS, NOW],
+    [NOW, RESET_SECONDS],
+  ])("persists canonical markers and avoids warmup after a unit change and restart (%i -> %i)", async (first, second) => {
+    const cfg = config();
+    writeFileSync(join(testHome, "config.json"), JSON.stringify(cfg));
+    let observed = first;
+    let warmups = 0;
+    const deps = {
+      getQuota: (id: string) => id === "pool-a"
+        ? quota({ shortResetAt: observed, weeklyResetAt: observed }) : null,
+      warmAccount: async () => { warmups += 1; },
+    };
+    await runCodexQuotaAutoRefresh(cfg, NOW, deps);
+    expect(readConfigDiagnostics().config.codexQuotaAutoRefresh?.["pool-a"]).toMatchObject({
+      lastFiveHourResetAt: NOW,
+      lastWeeklyResetAt: NOW,
+    });
+    observed = second;
+    await runCodexQuotaAutoRefresh(cfg, NOW + 1, deps);
+    resetCodexQuotaAutoRefreshForTests();
+    await runCodexQuotaAutoRefresh(loadConfig(), NOW + 2, deps);
+    expect(warmups).toBe(1);
+    observed = RESET_SECONDS + 1;
+    await runCodexQuotaAutoRefresh(loadConfig(), NOW + 1000, deps);
+    expect(warmups).toBe(2);
+    expect(readConfigDiagnostics().config.codexQuotaAutoRefresh?.["pool-a"]).toMatchObject({
+      lastFiveHourResetAt: NOW + 1000,
+      lastWeeklyResetAt: NOW + 1000,
+    });
+  });
+
   test("coalesces simultaneous windows into one warmup and persists both markers", async () => {
     const cfg = config();
     const warmed: string[] = [];
@@ -149,8 +205,8 @@ describe("Codex quota window auto refresh", () => {
     });
     expect(warmed).toEqual(["pool-a"]);
     expect(cfg.codexQuotaAutoRefresh?.["pool-a"]).toMatchObject({
-      lastFiveHourResetAt: RESET_SECONDS,
-      lastWeeklyResetAt: RESET_SECONDS,
+      lastFiveHourResetAt: NOW,
+      lastWeeklyResetAt: NOW,
     });
   });
 
@@ -170,20 +226,36 @@ describe("Codex quota window auto refresh", () => {
     const cfg = config();
     let warmups = 0;
     let writes = 0;
+    let observed = RESET_SECONDS;
     const persist = (target: OcxConfig, id: string, completed: CodexQuotaAutoRefreshWindows) => {
       writes += 1;
-      return writes > 1 ? recordMarkers(target, id, completed) : false;
+      return writes > 2 ? recordMarkers(target, id, completed) : false;
     };
     const deps = {
-      getQuota: (id: string) => id === "pool-a" ? quota() : null,
+      getQuota: (id: string) => id === "pool-a"
+        ? quota({ shortResetAt: observed, weeklyResetAt: observed }) : null,
       warmAccount: async () => { warmups += 1; },
       persistCompleted: persist,
     };
     await runCodexQuotaAutoRefresh(cfg, NOW, deps);
+    observed = NOW;
     await runCodexQuotaAutoRefresh(cfg, NOW + 1, deps);
     expect(warmups).toBe(1);
     expect(writes).toBe(2);
-    expect(cfg.codexQuotaAutoRefresh?.["pool-a"]?.lastWeeklyResetAt).toBe(RESET_SECONDS);
+    await runCodexQuotaAutoRefresh(cfg, NOW + 2, deps);
+    expect(warmups).toBe(1);
+    expect(writes).toBe(3);
+    expect(cfg.codexQuotaAutoRefresh?.["pool-a"]).toMatchObject({
+      lastFiveHourResetAt: NOW,
+      lastWeeklyResetAt: NOW,
+    });
+    // Equivalent legacy markers must not cause another persistence attempt either.
+    cfg.codexQuotaAutoRefresh = {
+      "pool-a": { fiveHour: true, weekly: true, lastFiveHourResetAt: RESET_SECONDS, lastWeeklyResetAt: RESET_SECONDS },
+    };
+    await runCodexQuotaAutoRefresh(cfg, NOW + 3, deps);
+    expect(warmups).toBe(1);
+    expect(writes).toBe(3);
   });
 
   test("backs a failed main-account claim or warmup off for five minutes", async () => {
@@ -202,7 +274,7 @@ describe("Codex quota window auto refresh", () => {
     await runCodexQuotaAutoRefresh(cfg, NOW + 5 * 60_000 - 1, deps);
     await runCodexQuotaAutoRefresh(cfg, NOW + 5 * 60_000, deps);
     expect(attempts).toBe(2);
-    expect(cfg.codexQuotaAutoRefresh?.__main__?.lastFiveHourResetAt).toBe(RESET_SECONDS);
+    expect(cfg.codexQuotaAutoRefresh?.__main__?.lastFiveHourResetAt).toBe(NOW);
   });
 
   test("settings route persists supported toggles and rejects unavailable windows", async () => {