diff --git a/src/app/(protected)/workorders/_components/list/filter-bar/dispatcher-filter.tsx b/src/app/(protected)/workorders/_components/list/filter-bar/dispatcher-filter.tsx
index 9db6ca98..6bee3519 100644
--- a/src/app/(protected)/workorders/_components/list/filter-bar/dispatcher-filter.tsx
+++ b/src/app/(protected)/workorders/_components/list/filter-bar/dispatcher-filter.tsx
@@ -14,6 +14,7 @@ type DispatcherFilterProps = {
   users: WorkOrderUser[];
   usersLoading?: boolean;
   currentUserId?: string | number;
+  disabled?: boolean;
 };
 
 function userInitials(name: string): string {
@@ -40,6 +41,7 @@ export function DispatcherFilter({
   users,
   usersLoading = false,
   currentUserId,
+  disabled = false,
 }: DispatcherFilterProps) {
   const { anchorEl, open, setAnchor, close } = useMenuAnchor();
 
@@ -86,6 +88,7 @@ export function DispatcherFilter({
       <MenuAnchorButton
         onAnchor={setAnchor}
         open={open}
+        disabled={disabled}
         className="flex w-auto shrink-0 items-center gap-2 border whitespace-nowrap transition-colors"
         style={
           !allSelected
diff --git a/src/app/(protected)/workorders/_components/list/filter-bar/week-nav.tsx b/src/app/(protected)/workorders/_components/list/filter-bar/week-nav.tsx
index a99e3a02..ab8fc786 100644
--- a/src/app/(protected)/workorders/_components/list/filter-bar/week-nav.tsx
+++ b/src/app/(protected)/workorders/_components/list/filter-bar/week-nav.tsx
@@ -16,6 +16,8 @@ type WeekNavProps = {
   weekMonday: string;
 
   onChange: (mondayIso: string) => void;
+
+  disabled?: boolean;
 };
 
 const VISIBLE_COUNT = 3;
@@ -51,7 +53,7 @@ function WeekLiveBadge() {
   );
 }
 
-export function WeekNav({ weekMonday, onChange }: WeekNavProps) {
+export function WeekNav({ weekMonday, onChange, disabled = false }: WeekNavProps) {
   const weeks = useMemo(
     () => buildWeekWindow(weekMonday, WINDOW_BEFORE, WINDOW_AFTER),
 
@@ -91,7 +93,7 @@ export function WeekNav({ weekMonday, onChange }: WeekNavProps) {
   return (
     <div className="flex shrink-0 items-center gap-1.5">
       <NavArrowButton
-        disabled={!canGoBack}
+        disabled={disabled || !canGoBack}
         onClick={() => setOffset((current) => current - 1)}
         aria-label="Previous weeks"
       >
@@ -109,7 +111,7 @@ export function WeekNav({ weekMonday, onChange }: WeekNavProps) {
           <NavPillButton
             key={week.mondayIso}
             active={isActive}
-            disabled={isDisabled}
+            disabled={disabled || isDisabled}
             onClick={() => onChange(week.mondayIso)}
           >
             {week.label}
@@ -120,7 +122,7 @@ export function WeekNav({ weekMonday, onChange }: WeekNavProps) {
       })}
 
       <NavArrowButton
-        disabled={!canGoForward}
+        disabled={disabled || !canGoForward}
         onClick={() => setOffset((current) => current + 1)}
         aria-label="Next weeks"
       >
diff --git a/src/app/(protected)/workorders/_components/list/filter-bar/wo-type-segment.tsx b/src/app/(protected)/workorders/_components/list/filter-bar/wo-type-segment.tsx
index 3810f8ec..03d89520 100644
--- a/src/app/(protected)/workorders/_components/list/filter-bar/wo-type-segment.tsx
+++ b/src/app/(protected)/workorders/_components/list/filter-bar/wo-type-segment.tsx
@@ -8,15 +8,22 @@ type WoTypeSegmentProps = {
   value: WorkOrderTypeFilter;
 
   onChange: (value: WorkOrderTypeFilter) => void;
+
+  disabled?: boolean;
 };
 
 const OPTIONS: WorkOrderTypeFilter[] = ["All", ...WO_TYPES];
 
-export function WoTypeSegment({ value, onChange }: WoTypeSegmentProps) {
+export function WoTypeSegment({ value, onChange, disabled = false }: WoTypeSegmentProps) {
   return (
     <SegmentGroup>
       {OPTIONS.map((option) => (
-        <SegmentButton key={option} active={value === option} onClick={() => onChange(option)}>
+        <SegmentButton
+          key={option}
+          active={value === option}
+          disabled={disabled}
+          onClick={() => onChange(option)}
+        >
           {option}
         </SegmentButton>
       ))}
diff --git a/src/app/(protected)/workorders/_components/list/filter-bar/work-orders-filter-bar.tsx b/src/app/(protected)/workorders/_components/list/filter-bar/work-orders-filter-bar.tsx
index d12819f5..3a1c114f 100644
--- a/src/app/(protected)/workorders/_components/list/filter-bar/work-orders-filter-bar.tsx
+++ b/src/app/(protected)/workorders/_components/list/filter-bar/work-orders-filter-bar.tsx
@@ -16,6 +16,7 @@ type WorkOrdersFilterBarProps = {
   currentUserId?: string | number;
   filteredCount: number;
   scopeTotalCount: number;
+  disabled?: boolean;
 };
 
 export function WorkOrdersFilterBar({
@@ -30,20 +31,25 @@ export function WorkOrdersFilterBar({
   currentUserId,
   filteredCount,
   scopeTotalCount,
+  disabled = false,
 }: WorkOrdersFilterBarProps) {
   const resultLabel = `${filteredCount} of ${scopeTotalCount}`;
 
   return (
-    <div className="-mx-2.5 flex h-14 shrink-0 items-center gap-3 border-b border-(--color-border) bg-(--color-bg-surface) px-4">
+    <div
+      className="-mx-2.5 flex h-14 shrink-0 items-center gap-3 border-b border-(--color-border) bg-(--color-bg-surface) px-4"
+      aria-disabled={disabled}
+    >
       <DispatcherFilter
         selectedIds={dispatcherIds}
         onChange={onDispatcherChange}
         users={users}
         usersLoading={usersLoading}
         currentUserId={currentUserId}
+        disabled={disabled}
       />
-      <WeekNav weekMonday={weekMonday} onChange={onWeekChange} />
-      <WoTypeSegment value={typeFilter} onChange={onTypeChange} />
+      <WeekNav weekMonday={weekMonday} onChange={onWeekChange} disabled={disabled} />
+      <WoTypeSegment value={typeFilter} onChange={onTypeChange} disabled={disabled} />
       <div className="flex-1" />
       <span className="shrink-0 text-xs font-medium text-muted-foreground">{resultLabel}</span>
     </div>
diff --git a/src/app/(protected)/workorders/index.tsx b/src/app/(protected)/workorders/index.tsx
index 9036de10..066cd167 100644
--- a/src/app/(protected)/workorders/index.tsx
+++ b/src/app/(protected)/workorders/index.tsx
@@ -49,6 +49,7 @@ export default function WorkOrdersListPage() {
         currentUserId={user?.id}
         filteredCount={tableData.totalCount}
         scopeTotalCount={tableData.scopeTotalCount}
+        disabled={filters.advApplied != null}
       />
 
       {filters.advApplied != null && (
diff --git a/src/domain/work-orders/utils/board-query-params.ts b/src/domain/work-orders/utils/board-query-params.ts
index ba8d6701..36592b05 100644
--- a/src/domain/work-orders/utils/board-query-params.ts
+++ b/src/domain/work-orders/utils/board-query-params.ts
@@ -1,5 +1,8 @@
 import { ASSIGNEE_FILTER_UNASSIGNED } from "@/domain/work-orders/types/work-order-list";
-import type { WorkOrderAdvancedFilters } from "@/domain/work-orders/types/work-order-advanced-filters";
+import {
+  EMPTY_ADVANCED_FILTERS,
+  type WorkOrderAdvancedFilters,
+} from "@/domain/work-orders/types/work-order-advanced-filters";
 import type { WorkOrderBarFilters } from "@/domain/work-orders/types/work-order-list-filters";
 import {
   BOARD_DISPATCHER_UNASSIGNED,
@@ -16,6 +19,10 @@ import type { WizardWOStatus, WOType } from "@/domain/work-orders/types/work-ord
 
 export const BOARD_SEARCH_MAX_PAGE_SIZE = 100;
 
+/** Wide Custom window so applied advanced search is not pinned to ThisWeek. */
+export const ADVANCED_SEARCH_ALL_WEEKS_FROM = "2000-01-01";
+export const ADVANCED_SEARCH_ALL_WEEKS_TO = "2099-12-31";
+
 function toBoardDispatcherId(id: string): string {
   if (id === ASSIGNEE_FILTER_UNASSIGNED || id === BOARD_DISPATCHER_UNASSIGNED) {
     return BOARD_DISPATCHER_UNASSIGNED;
@@ -136,6 +143,31 @@ export function toBoardQueryParams(
   };
 }
 
+function resolveAdvancedSearchDate(filters: WorkOrderAdvancedFilters): {
+  datePreset: WorkOrderBoardSearchQueryParams["datePreset"];
+  dateFrom?: string;
+  dateTo?: string;
+} {
+  if (filters.dateRange === EMPTY_ADVANCED_FILTERS.dateRange) {
+    return {
+      datePreset: "Custom",
+      dateFrom: ADVANCED_SEARCH_ALL_WEEKS_FROM,
+      dateTo: ADVANCED_SEARCH_ALL_WEEKS_TO,
+    };
+  }
+
+  const datePreset = DATE_RANGE_TO_PRESET[filters.dateRange];
+  if (datePreset === "Custom") {
+    return {
+      datePreset,
+      dateFrom: filters.customFrom || undefined,
+      dateTo: filters.customTo || undefined,
+    };
+  }
+
+  return { datePreset };
+}
+
 /** Build GET /board/search query from advanced filters (+ optional bar/search). */
 export function toBoardSearchQueryParams(input: {
   filters: WorkOrderAdvancedFilters;
@@ -148,7 +180,7 @@ export function toBoardSearchQueryParams(input: {
   vendorIdsByCompanyName?: Map<string, number>;
 }): WorkOrderBoardSearchQueryParams {
   const { filters } = input;
-  const datePreset = DATE_RANGE_TO_PRESET[filters.dateRange];
+  const date = resolveAdvancedSearchDate(filters);
   const pageSize = Math.min(
     input.pageSize ?? BOARD_SEARCH_MAX_PAGE_SIZE,
     BOARD_SEARCH_MAX_PAGE_SIZE,
@@ -158,11 +190,13 @@ export function toBoardSearchQueryParams(input: {
   const trimmedSearch = input.search?.trim();
   const search = trimmedSearch && trimmedSearch.length >= 2 ? trimmedSearch : undefined;
 
-  const params: WorkOrderBoardSearchQueryParams = {
+  return {
     page: input.page ?? 0,
     pageSize,
     search,
-    datePreset,
+    datePreset: date.datePreset,
+    dateFrom: date.dateFrom,
+    dateTo: date.dateTo,
     sites: filters.sites.size > 0 ? [...filters.sites] : undefined,
     types: typeFilters.types,
     overdue: typeFilters.overdue,
@@ -175,13 +209,6 @@ export function toBoardSearchQueryParams(input: {
     sortBy: input.sortBy || "scheduledDate",
     sortDir: input.sortDir === "desc" ? "desc" : "asc",
   };
-
-  if (datePreset === "Custom") {
-    params.dateFrom = filters.customFrom || undefined;
-    params.dateTo = filters.customTo || undefined;
-  }
-
-  return params;
 }
 
 /** ky/URLSearchParams-friendly object; arrays become repeated keys. */
diff --git a/src/test/app/(protected)/workorders/work-orders-advanced-search-wiring.test.tsx b/src/test/app/(protected)/workorders/work-orders-advanced-search-wiring.test.tsx
index 197dd309..19bca5be 100644
--- a/src/test/app/(protected)/workorders/work-orders-advanced-search-wiring.test.tsx
+++ b/src/test/app/(protected)/workorders/work-orders-advanced-search-wiring.test.tsx
@@ -106,10 +106,6 @@ vi.mock("@/app/(protected)/workorders/_components/list/table/wo-table", () => ({
   WoTable: () => null,
 }));
 
-vi.mock("@/app/(protected)/workorders/_components/list/filter-bar/work-orders-filter-bar", () => ({
-  WorkOrdersFilterBar: () => null,
-}));
-
 vi.mock("@/app/(protected)/workorders/_components/media/media-upload-modal", () => ({
   MediaUploadModal: () => null,
 }));
@@ -196,6 +192,9 @@ describe("WorkOrders Advanced Search page wiring (SH-121)", () => {
     expect(params.severities).toEqual([1]);
     expect(params.hasUplift).toBe(true);
     expect(params.upliftStatuses).toEqual(["pending"]);
+    expect(params.datePreset).toBe("Custom");
+    expect(params.dateFrom).toBe("2000-01-01");
+    expect(params.dateTo).toBe("2099-12-31");
   });
 
   it("applies Indicators, Flag, and Internal WO# through the public Advanced Filters sheet", () => {
@@ -239,5 +238,22 @@ describe("WorkOrders Advanced Search page wiring (SH-121)", () => {
     expect(params.addOn).toBe(true);
     expect(params.flagColors).toEqual(["#EF4444"]);
     expect(params.internalOnly).toBe(true);
+    expect(params.datePreset).toBe("Custom");
+    expect(params.dateFrom).toBe("2000-01-01");
+    expect(params.dateTo).toBe("2099-12-31");
+  });
+
+  it("disables dispatcher, week, and type bar while advanced filters are applied", () => {
+    advApplied = { ...EMPTY_ADVANCED_FILTERS, rescheduled: true };
+    renderWithProviders(<WorkOrdersListPage />, {
+      route: "/workorders",
+      withAuth: false,
+    });
+
+    expect(screen.getByRole("button", { name: "All dispatchers" })).toBeDisabled();
+    expect(screen.getByRole("button", { name: "Previous weeks" })).toBeDisabled();
+    expect(screen.getByRole("button", { name: "Next weeks" })).toBeDisabled();
+    expect(screen.getByRole("button", { name: "All" })).toBeDisabled();
+    expect(screen.getByRole("button", { name: "PM" })).toBeDisabled();
   });
 });
diff --git a/src/test/domain/work-orders/utils/board-query-params.test.ts b/src/test/domain/work-orders/utils/board-query-params.test.ts
index 31461891..53f79b3b 100644
--- a/src/test/domain/work-orders/utils/board-query-params.test.ts
+++ b/src/test/domain/work-orders/utils/board-query-params.test.ts
@@ -65,7 +65,9 @@ describe("toBoardSearchQueryParams", () => {
     });
     expect(params.page).toBe(0);
     expect(params.pageSize).toBe(BOARD_SEARCH_MAX_PAGE_SIZE);
-    expect(params.datePreset).toBe("ThisWeek");
+    expect(params.datePreset).toBe("Custom");
+    expect(params.dateFrom).toBe("2000-01-01");
+    expect(params.dateTo).toBe("2099-12-31");
   });
 
   it("maps date presets to PascalCase API values", () => {
@@ -96,8 +98,9 @@ describe("toBoardSearchQueryParams", () => {
         customTo: "2026-06-30",
       },
     });
-    expect(thisWeek.dateFrom).toBeUndefined();
-    expect(thisWeek.dateTo).toBeUndefined();
+    expect(thisWeek.datePreset).toBe("Custom");
+    expect(thisWeek.dateFrom).toBe("2000-01-01");
+    expect(thisWeek.dateTo).toBe("2099-12-31");
   });
 
   it("maps Overdue-only advanced filter to overdue=true without types", () => {