diff --git a/.changeset/29541-reserved-date-range-stored-detector.md b/.changeset/29541-reserved-date-range-stored-detector.md
new file mode 100644
index 00000000000..80ff057cfa9
--- /dev/null
+++ b/.changeset/29541-reserved-date-range-stored-detector.md
@@ -0,0 +1,12 @@
+---
+'@objectstack/spec': patch
+---
+
+fix(spec): `os migrate meta --stored` lists a stored dashboard whose global filter is keyed `dateRange` beside a declared `dateRange`
+
+Clause-②: no
+Metadata-protocol: none
+
+- **Before.** `DashboardSchema` refuses a dashboard that declares the built-in `dateRange` and also keys a `globalFilters` entry `dateRange` (its `name`, or its `field` when it has no `name`), and the dashboard save door answers 422 `INVALID_METADATA`. A dashboard already stored in that shape still loads with `_diagnostics` reading `valid: false`, but the v18 stored-row preview had no detector for it, so `os migrate meta --stored` named no such row before the upgrade.
+- **Now.** The preview lists each such stored dashboard under the TODO id `ui-dashboard-global-filter-reserved-date-range-refused` (the refusal's upgrade guide entry), at the entry's `name` (or `field`), the site the parse refuses, with the refusal's own message. The detector calls the refinement's own predicate, so a row is listed exactly when the parse refuses it. Nothing rewrites it: whether the entry was meant to be the date range or a filter of its own, only the author knows. The upgrade guide entries of this refusal and of the duplicate-key refusal now say that `os migrate meta --stored` lists such a row.
+- **Not changed.** What any door accepts or refuses. On a dashboard that does not declare `dateRange`, an entry keyed `dateRange` is not listed; nor is a named entry whose `field` is `dateRange`.
diff --git a/packages/spec/src/conversions/refused-shapes.test.ts b/packages/spec/src/conversions/refused-shapes.test.ts
index 267f0791c27..3091146aa77 100644
--- a/packages/spec/src/conversions/refused-shapes.test.ts
+++ b/packages/spec/src/conversions/refused-shapes.test.ts
@@ -73,6 +73,7 @@ describe('the refused-shape list — registered against the migration chain', ()
       'visibility-predicate-has-argument-refused',
       'object-duplicate-action-name-refused',
       'ui-dashboard-global-filter-duplicate-name-refused',
+      'ui-dashboard-global-filter-reserved-date-range-refused',
       'object-extension-field-patch-key-grammar-refused',
     ]);
   });
@@ -855,6 +856,89 @@ describe('#29212 — a stored dashboard that declares one global filter key twic
   });
 });
 
+// ── #29541 (the #29213 refusal) ───────────────────────────────────────────
+
+/** A dashboard that declares the built-in `dateRange`, unless `declared` is false. */
+const dateRangeBoard = (globalFilters: unknown[], declared = true) => ({
+  ...dupBoard(globalFilters),
+  ...(declared ? { dateRange: { field: 'close_date' } } : {}),
+});
+/** The dashboard parse's reserved-`dateRange` issues, as paths. */
+const reservedFilterIssuePaths = (row: unknown) => {
+  const parsed = DashboardSchema.safeParse(row);
+  return parsed.success
+    ? []
+    : parsed.error.issues
+      .filter((i) => i.path[0] === 'globalFilters' && /the reserved name of the built-in date range/.test(i.message))
+      .map((i) => i.path);
+};
+
+describe('#29541 — a stored dashboard whose globalFilters entry is keyed dateRange beside a declared dateRange is listed', () => {
+  it('one TODO at the entry\'s name, naming the reserved word and the built-in date range; the row is not rewritten', () => {
+    const row = dateRangeBoard([{ name: 'dateRange', field: 'region', type: 'text' }]);
+    const { item, todos } = storedTodos('dashboard', row);
+    expect(item).toEqual(row);
+    expect(todos).toHaveLength(1);
+    const todo = todos[0]!;
+    expect(todo.conversionId).toBe('ui-dashboard-global-filter-reserved-date-range-refused');
+    expect(todo.path).toBe('dashboards[0].globalFilters[0].name');
+    expect(todo.reason).toMatch(/^No lossless rewrite: whether the entry was meant to be the date range/);
+    expect(todo.reason).toContain(
+      "globalFilters[0] is keyed 'dateRange', the reserved name of the built-in date range this dashboard "
+        + 'declares in `dateRange`.',
+    );
+    expect(todo.reason).not.toMatch(/#\d{3,}/);
+    expect(JSON.parse(todo.from)).toEqual({ name: 'dateRange', index: 0 });
+    // The listing and the parse refuse ONE set: the stored row still fails the parse, at the same site.
+    expect(reservedFilterIssuePaths(item)).toEqual([['globalFilters', 0, 'name']]);
+  });
+
+  it('an entry with no `name` keyed by its `field` is listed at that field, as the parse locates it', () => {
+    const row = dateRangeBoard([
+      { name: 'region', field: 'region', type: 'text' },
+      { field: 'dateRange', type: 'date' },
+    ]);
+    const { todos } = storedTodos('dashboard', row);
+    expect(todos).toHaveLength(1);
+    expect(todos[0]!.path).toBe('dashboards[0].globalFilters[1].field');
+    expect(JSON.parse(todos[0]!.from)).toEqual({ name: 'dateRange', index: 1 });
+    expect(todos[0]!.reason).toContain('(a filter with no `name` is keyed by its `field`)');
+    expect(reservedFilterIssuePaths(row)).toEqual([['globalFilters', 1, 'field']]);
+  });
+
+  it('a key both repeated and reserved is listed under each refusal, as the parse refuses it under each', () => {
+    const row = dateRangeBoard([
+      { name: 'dateRange', field: 'region', type: 'text' },
+      { name: 'dateRange', field: 'status', type: 'text' },
+    ]);
+    const { todos } = storedTodos('dashboard', row);
+    expect(todos.map((t) => `${t.conversionId} @ ${t.path}`)).toEqual([
+      'ui-dashboard-global-filter-duplicate-name-refused @ dashboards[0].globalFilters[1].name',
+      'ui-dashboard-global-filter-reserved-date-range-refused @ dashboards[0].globalFilters[0].name',
+      'ui-dashboard-global-filter-reserved-date-range-refused @ dashboards[0].globalFilters[1].name',
+    ]);
+    expect(reservedFilterIssuePaths(row)).toEqual([['globalFilters', 0, 'name'], ['globalFilters', 1, 'name']]);
+    expect(dupFilterIssue(row)?.path).toEqual(['globalFilters', 1, 'name']);
+  });
+
+  it('CONTROL: with no dateRange declared, an entry keyed dateRange is not listed — and the parse accepts it', () => {
+    for (const filters of [
+      [{ name: 'dateRange', field: 'close_date', type: 'date' }],
+      [{ field: 'dateRange', type: 'date' }],
+    ]) {
+      const row = dateRangeBoard(filters, false);
+      expect(storedTodos('dashboard', row).todos).toEqual([]);
+      expect(DashboardSchema.safeParse(row).success).toBe(true);
+    }
+  });
+
+  it('CONTROL: beside a declared dateRange, a named entry over the field dateRange is not listed — and parses', () => {
+    const row = dateRangeBoard([{ name: 'when', field: 'dateRange', type: 'date' }]);
+    expect(storedTodos('dashboard', row).todos).toEqual([]);
+    expect(DashboardSchema.safeParse(row).success).toBe(true);
+  });
+});
+
 // ── #29554 (the #29366 refusal) ───────────────────────────────────────────
 
 const patchRow = (fieldPatches: Record<string, unknown>) => ({ extend: 'crm_account', fieldPatches });
diff --git a/packages/spec/src/conversions/refused-shapes.ts b/packages/spec/src/conversions/refused-shapes.ts
index d205cc7d3b7..8bf7ef447c6 100644
--- a/packages/spec/src/conversions/refused-shapes.ts
+++ b/packages/spec/src/conversions/refused-shapes.ts
@@ -45,7 +45,8 @@
  *   ({@link externalBindingDatasourceRefusal}), and the one-name-per-action
  *   judge of the object refinement ({@link duplicateActionNames}), and the
  *   one-key-per-global-filter judge of the dashboard refinement
- *   ({@link duplicateGlobalFilterNames}), and the `fieldPatches` key
+ *   ({@link duplicateGlobalFilterNames}), and its reserved-`dateRange` judge
+ *   ({@link reservedDateRangeGlobalFilters}), and the `fieldPatches` key
  *   grammar of `ObjectExtensionSchema`'s own parse
  *   ({@link refusedFieldPatchKeys}). A site is listed here exactly
  *   when that door refuses it. One door lives outside this package: the
@@ -73,7 +74,11 @@ import { duplicateActionNames } from '../data/duplicate-action-names.js';
 import { externalBindingDatasourceRefusal } from '../data/external-binding-datasource.js';
 import { ObjectExtensionSchema } from '../data/object.zod.js';
 import { ComponentPropsMap } from '../ui/component.zod.js';
-import { duplicateGlobalFilterNames } from '../ui/duplicate-global-filter-names.js';
+import {
+  duplicateGlobalFilterNames,
+  RESERVED_DATE_RANGE_FILTER_NAME,
+  reservedDateRangeGlobalFilters,
+} from '../ui/duplicate-global-filter-names.js';
 import { ViewDataSchema } from '../ui/view.zod.js';
 import { refusedHasArguments } from './cel-has-argument.js';
 import type { ConversionTodoDetail } from './types.js';
@@ -587,6 +592,32 @@ const dashboardDuplicateGlobalFilterName: RefusedStoredShape = {
   },
 };
 
+// ── #29541: a dashboard whose globalFilters entry reuses the reserved key `dateRange` (the #29213 refusal) ──
+
+const dashboardReservedDateRangeGlobalFilter: RefusedStoredShape = {
+  id: 'ui-dashboard-global-filter-reserved-date-range-refused',
+  toMajor: 18,
+  surface: 'dashboard.globalFilters — an entry keyed `dateRange` (its `name`, or its `field` when it has no '
+    + '`name`) on a dashboard that also declares the built-in `dateRange`',
+  detect(stack, report) {
+    mapCollection(stack, 'dashboards', (dashboard, path) => {
+      for (const entry of reservedDateRangeGlobalFilters(dashboard.dateRange, dashboard.globalFilters)) {
+        report({
+          // The site the dashboard parse refuses: the entry's `name`, or its `field`.
+          path: `${path}.globalFilters[${entry.index}].${entry.key}`,
+          from: JSON.stringify({ name: RESERVED_DATE_RANGE_FILTER_NAME, index: entry.index }),
+          reason: 'No lossless rewrite: whether the entry was meant to be the date range or a filter of its own, '
+            + 'and which widget `filterBindings.dateRange` keys mean it, only the author knows. Left as stored, '
+            + 'the dashboard still loads with `_diagnostics` reading `valid: false`, and its next save, draft or '
+            + 'publish, is refused with 422 INVALID_METADATA. '
+            + entry.message,
+        });
+      }
+      return dashboard;
+    });
+  },
+};
+
 // ── #29554: an object extension whose `fieldPatches` key cannot be a field name (the #29366 refusal) ──
 
 /**
@@ -647,6 +678,7 @@ export const REFUSED_STORED_SHAPES: readonly RefusedStoredShape[] = [
   visibilityHasArgument,
   objectDuplicateActionName,
   dashboardDuplicateGlobalFilterName,
+  dashboardReservedDateRangeGlobalFilter,
   objectExtensionFieldPatchKeyGrammar,
 ];
 
diff --git a/packages/spec/src/migrations/entries/semantic/18.ui-dashboard-global-filter-duplicate-name-refused.ts b/packages/spec/src/migrations/entries/semantic/18.ui-dashboard-global-filter-duplicate-name-refused.ts
index def130204a5..b33cd2b3554 100644
--- a/packages/spec/src/migrations/entries/semantic/18.ui-dashboard-global-filter-duplicate-name-refused.ts
+++ b/packages/spec/src/migrations/entries/semantic/18.ui-dashboard-global-filter-duplicate-name-refused.ts
@@ -34,6 +34,7 @@ export const entry: SemanticMigration = {
     + 'filter it meant, and that `os validate` reports no `dashboard-filter-binding-unknown` finding. A '
     + 'stored `sys_metadata` dashboard that still repeats a key still loads, with `_diagnostics` reading '
     + '`valid: false` and carrying this refusal, and its next save (draft or publish) is refused; nothing '
-    + 'rewrites it. Measured before the change: no authored dashboard in this repository\'s examples, '
-    + 'platform objects, docs or skills repeats a filter key.',
+    + 'rewrites it. `os migrate meta --stored` lists each such stored dashboard under this entry\'s id, at '
+    + 'the second declaration\'s `name` (or `field`). Measured before the change: no authored dashboard in '
+    + 'this repository\'s examples, platform objects, docs or skills repeats a filter key.',
 };
diff --git a/packages/spec/src/migrations/entries/semantic/18.ui-dashboard-global-filter-reserved-date-range-refused.ts b/packages/spec/src/migrations/entries/semantic/18.ui-dashboard-global-filter-reserved-date-range-refused.ts
index 583b719bdf6..39cad6832d3 100644
--- a/packages/spec/src/migrations/entries/semantic/18.ui-dashboard-global-filter-reserved-date-range-refused.ts
+++ b/packages/spec/src/migrations/entries/semantic/18.ui-dashboard-global-filter-reserved-date-range-refused.ts
@@ -35,7 +35,8 @@ export const entry: SemanticMigration = {
     + '`filterBindings` key names the filter it meant, and that `os validate` reports no '
     + '`dashboard-filter-binding-unknown` finding. A stored `sys_metadata` dashboard that still carries '
     + 'the pair still loads, with `_diagnostics` reading `valid: false` and carrying this refusal, and its '
-    + 'next save (draft or publish) is refused; nothing rewrites it. Measured before the change: no '
-    + 'authored dashboard in this repository\'s examples, apps, packages or ui tree keys a global filter '
-    + '`dateRange`.',
+    + 'next save (draft or publish) is refused; nothing rewrites it. `os migrate meta --stored` lists each '
+    + 'such stored dashboard under this entry\'s id, at the entry\'s `name` (or `field`). Measured before the '
+    + 'change: no authored dashboard in this repository\'s examples, apps, packages or ui tree keys a '
+    + 'global filter `dateRange`.',
 };