diff --git a/src/app/core/_components/tables/ht-table/ht-table.component.ts b/src/app/core/_components/tables/ht-table/ht-table.component.ts
index 3060f350..9d7ea518 100644
--- a/src/app/core/_components/tables/ht-table/ht-table.component.ts
+++ b/src/app/core/_components/tables/ht-table/ht-table.component.ts
@@ -22,7 +22,7 @@ import { MatPaginator, PageEvent } from '@angular/material/paginator';
 import { MatSort, SortDirection } from '@angular/material/sort';
 
 import { BaseModel } from '@models/base.model';
-import { TableSettingsKey, UIConfig } from '@models/config-ui.model';
+import { Sorting, TableSettingsKey, UIConfig } from '@models/config-ui.model';
 import { JHash } from '@models/hash.model';
 
 import { ContextMenuService } from '@services/context-menu/base/context-menu.service';
@@ -386,10 +386,13 @@ export class HTTableComponent implements OnInit, AfterViewInit, OnDestroy {
    * @param {any} column - The column that was clicked for sorting.
    * @returns {void}
    */
-  onColumnHeaderClick(column: any): void {
-    const sorting = {
-      ...column,
-      direction: this.dataSource.sort['_direction']
+  onColumnHeaderClick(column: HTTableColumn): void {
+    const sorting: Sorting = {
+      id: column.id,
+      dataKey: column.dataKey,
+      isSortable: column.isSortable,
+      direction: this.dataSource.sort['_direction'],
+      ...(column.parent ? { parent: column.parent } : {})
     };
     this.dataSource.sortingColumn = sorting;
     if (!this.isDetailPage) {
diff --git a/src/app/core/_models/config-ui.model.ts b/src/app/core/_models/config-ui.model.ts
index ca6320a0..0640d58d 100644
--- a/src/app/core/_models/config-ui.model.ts
+++ b/src/app/core/_models/config-ui.model.ts
@@ -92,7 +92,8 @@ export interface Sorting {
   id: number;
   dataKey: string;
   isSortable: boolean;
-  direction: 'asc' | 'desc';
+  direction: 'asc' | 'desc' | '';
+  parent?: string;
 }
 
 const _uiConfigDefault = {
diff --git a/src/app/core/_models/config-ui.schema.spec.ts b/src/app/core/_models/config-ui.schema.spec.ts
index d910811e..f452f23e 100644
--- a/src/app/core/_models/config-ui.schema.spec.ts
+++ b/src/app/core/_models/config-ui.schema.spec.ts
@@ -1,5 +1,5 @@
 import { uiConfigDefault } from '@models/config-ui.model';
-import { uiConfigSchema, uisSettingsSchema } from '@models/config-ui.schema';
+import { sortingSchema, uiConfigSchema, uisSettingsSchema } from '@models/config-ui.schema';
 
 describe('uiConfigSchema', () => {
   // Use a deep copy to avoid interference from other tests that mutate the
@@ -144,6 +144,28 @@ describe('uiConfigSchema', () => {
     }
   });
 
+  it('should preserve the parent field in sorting order (relationship sort)', () => {
+    const config = {
+      ...defaults,
+      tableSettings: {
+        tasksTable: {
+          columns: [1, 2],
+          page: 25,
+          search: '',
+          order: { id: 2, dataKey: 'taskName', isSortable: true, direction: 'asc', parent: 'task' }
+        }
+      }
+    };
+
+    const result = uiConfigSchema.safeParse(config);
+    expect(result.success).toBeTrue();
+    if (result.success) {
+      const order = result.data.tableSettings['tasksTable']['order'];
+      expect(order).toBeDefined();
+      expect(order['parent']).toBe('task');
+    }
+  });
+
   it('should coerce string numbers to actual numbers in columns', () => {
     const config = {
       ...defaults,
@@ -326,3 +348,87 @@ describe('uisSettingsSchema', () => {
     }
   });
 });
+
+/**
+ * Replicates the sort parameter construction from
+ * RequestParamBuilder.addSorting (builder-implementation.service.ts).
+ */
+function buildSortParam(col: { dataKey: string; direction: string; parent?: string }): string {
+  const direction = col.direction === 'asc' ? '' : '-';
+  const parent = col.parent ? `${col.parent}.` : '';
+  return `${direction}${parent}${col.dataKey}`;
+}
+
+describe('sortingSchema – sort parameter round-trip', () => {
+  /**
+   * Every sortable column across all tables. Columns with a `parent` field
+   * produce a relationship sort like "task.taskName"; the rest produce a
+   * simple sort like "priority".
+   */
+  const sortableColumns: { table: string; dataKey: string; id: number; parent?: string }[] = [
+    // tasks-table (the only table with parent-based sort columns)
+    { table: 'tasks', dataKey: 'taskWrapperId', id: 0 },
+    { table: 'tasks', dataKey: 'taskType', id: 1 },
+    { table: 'tasks', dataKey: 'taskName', id: 2, parent: 'task' },
+    { table: 'tasks', dataKey: 'hashlistId', id: 5, parent: 'hashlist' },
+    { table: 'tasks', dataKey: 'cracked', id: 7 },
+    { table: 'tasks', dataKey: 'groupName', id: 9, parent: 'accessGroup' },
+    { table: 'tasks', dataKey: 'isSmall', id: 10, parent: 'task' },
+    { table: 'tasks', dataKey: 'isCpuTask', id: 11, parent: 'task' },
+    { table: 'tasks', dataKey: 'priority', id: 12 },
+    { table: 'tasks', dataKey: 'maxAgents', id: 13 },
+    // Representative columns from other tables (no parent)
+    { table: 'agents', dataKey: 'id', id: 0 },
+    { table: 'agents', dataKey: 'agentName', id: 1 },
+    { table: 'users', dataKey: 'name', id: 1 },
+    { table: 'hashlists', dataKey: 'id', id: 0 },
+    { table: 'files', dataKey: 'filename', id: 1 },
+    { table: 'cracks', dataKey: 'timeCracked', id: 0 },
+  ];
+
+  for (const direction of ['asc', 'desc'] as const) {
+    for (const col of sortableColumns) {
+      const label = col.parent ? `${col.parent}.${col.dataKey}` : col.dataKey;
+
+      it(`[${col.table}] sort=${direction === 'desc' ? '-' : ''}${label} should survive schema round-trip`, () => {
+        // 1. Build the sorting object as onColumnHeaderClick would
+        const initial = {
+          id: col.id,
+          dataKey: col.dataKey,
+          isSortable: true as const,
+          direction,
+          ...(col.parent ? { parent: col.parent } : {})
+        };
+
+        // 2. Round-trip through sortingSchema (simulates localStorage save + restore)
+        const result = sortingSchema.safeParse(initial);
+        expect(result.success).toBeTrue();
+
+        // 3. The sort parameter sent to the API must be identical
+        const expected = buildSortParam(initial);
+        const actual = buildSortParam(result.data as typeof initial);
+        expect(actual).toBe(expected);
+      });
+    }
+  }
+
+  it('should strip unknown fields on the sorting object', () => {
+    const withExtra = {
+      id: 1,
+      dataKey: 'taskName',
+      isSortable: true,
+      direction: 'asc' as const,
+      parent: 'task',
+      render: 'should not survive',
+      routerLink: 'should not survive'
+    };
+
+    const result = sortingSchema.safeParse(withExtra);
+    expect(result.success).toBeTrue();
+    if (result.success) {
+      expect(result.data['render']).toBeUndefined();
+      expect(result.data['routerLink']).toBeUndefined();
+      expect(result.data.parent).toBe('task');
+    }
+  });
+});
diff --git a/src/app/core/_models/config-ui.schema.ts b/src/app/core/_models/config-ui.schema.ts
index c1ee49e7..71e86854 100644
--- a/src/app/core/_models/config-ui.schema.ts
+++ b/src/app/core/_models/config-ui.schema.ts
@@ -82,7 +82,8 @@ export const sortingSchema = z.object({
   id: z.coerce.number(),
   dataKey: z.string(),
   isSortable: z.boolean(),
-  direction: z.enum(['asc', 'desc'])
+  direction: z.enum(['asc', 'desc', '']),
+  parent: z.string().optional()
 });
 
 /**
diff --git a/src/app/shared/utils/config.ts b/src/app/shared/utils/config.ts
index 9f50bfb2..6ebe27ef 100644
--- a/src/app/shared/utils/config.ts
+++ b/src/app/shared/utils/config.ts
@@ -1,17 +1,10 @@
-import { TableSettingsKey, UIConfig, UIConfigKeys, uiConfigDefault } from '@models/config-ui.model';
+import { Sorting, TableSettingsKey, UIConfig, UIConfigKeys, uiConfigDefault } from '@models/config-ui.model';
 import { uiConfigSchema } from '@models/config-ui.schema';
 
 import { LocalStorageService } from '@services/storage/local-storage.service';
 
 import { ThemeService } from '@src/app/core/_services/shared/theme.service';
 
-export interface TableOrder {
-  id: number;
-  dataKey: string;
-  isSortable: boolean;
-  direction: 'asc' | 'desc';
-}
-
 /**
  * Utility class for managing user interface settings and configurations.
  */
@@ -46,7 +39,7 @@ export class UISettingsUtilityClass {
    * @param {number} [settings.start] - The start index to set.
    * @param {number[]} [settings.columns] - An array of column numbers to set.
    * @param {number[]} [settings.search] - An array of column numbers to set.
-   * @param {TableOrder[]} [settings.order] - An array defining the order of columns.
+   * @param {Sorting[]} [settings.order] - An array defining the order of columns.
    */
   updateTableSettings(
     key: TableSettingsKey,
@@ -57,7 +50,7 @@ export class UISettingsUtilityClass {
       before?: number;
       totalItems?: number;
       columns?: number[];
-      order?: TableOrder[];
+      order?: Sorting | Sorting[];
       search?: string;
     }
   ): void {