diff --git a/src/library-authoring/components/ContainerCard.test.tsx b/src/library-authoring/components/ContainerCard.test.tsx
index a76601e1d0..a8716d7ad1 100644
--- a/src/library-authoring/components/ContainerCard.test.tsx
+++ b/src/library-authoring/components/ContainerCard.test.tsx
@@ -6,7 +6,7 @@ import {
   fireEvent,
 } from '../../testUtils';
 import { LibraryProvider } from '../common/context/LibraryContext';
-import { mockContentLibrary, mockGetContainerChildren } from '../data/api.mocks';
+import { mockContentLibrary } from '../data/api.mocks';
 import { type ContainerHit, PublishStatus } from '../../search-manager';
 import ContainerCard from './ContainerCard';
 import { getLibraryContainerApiUrl, getLibraryContainerRestoreApiUrl } from '../data/api';
@@ -40,7 +40,6 @@ let axiosMock: MockAdapter;
 let mockShowToast;
 
 mockContentLibrary.applyMock();
-mockGetContainerChildren.applyMock();
 
 const render = (ui: React.ReactElement, showOnlyPublished: boolean = false) => baseRender(ui, {
   extraWrapper: ({ children }) => (
@@ -155,29 +154,54 @@ describe('<ContainerCard />', () => {
   it('should render no child blocks in card preview', async () => {
     render(<ContainerCard hit={containerHitSample} />);
 
-    expect(screen.queryByTitle('text block')).not.toBeInTheDocument();
+    expect(screen.queryByTitle('lb:org1:Demo_course:html:text-0')).not.toBeInTheDocument();
     expect(screen.queryByText('+0')).not.toBeInTheDocument();
   });
 
   it('should render <=5 child blocks in card preview', async () => {
     const containerWith5Children = {
       ...containerHitSample,
-      usageKey: mockGetContainerChildren.fiveChildren,
-    };
+      content: {
+        childUsageKeys: Array(5).fill('').map((_child, idx) => `lb:org1:Demo_course:html:text-${idx}`),
+      },
+    } satisfies ContainerHit;
     render(<ContainerCard hit={containerWith5Children} />);
 
-    expect((await screen.findAllByTitle(/text block */)).length).toBe(5);
+    expect((await screen.findAllByTitle(/lb:org1:Demo_course:html:text-*/)).length).toBe(5);
     expect(screen.queryByText('+0')).not.toBeInTheDocument();
   });
 
   it('should render >5 child blocks with +N in card preview', async () => {
     const containerWith6Children = {
       ...containerHitSample,
-      usageKey: mockGetContainerChildren.sixChildren,
-    };
+      content: {
+        childUsageKeys: Array(6).fill('').map((_child, idx) => `lb:org1:Demo_course:html:text-${idx}`),
+      },
+    } satisfies ContainerHit;
     render(<ContainerCard hit={containerWith6Children} />);
 
-    expect((await screen.findAllByTitle(/text block */)).length).toBe(4);
+    expect((await screen.findAllByTitle(/lb:org1:Demo_course:html:text-*/)).length).toBe(4);
     expect(screen.queryByText('+2')).toBeInTheDocument();
   });
+
+  it('should render published child blocks when rendering a published card preview', async () => {
+    const containerWithPublishedChildren = {
+      ...containerHitSample,
+      content: {
+        childUsageKeys: Array(6).fill('').map((_child, idx) => `lb:org1:Demo_course:html:text-${idx}`),
+      },
+      published: {
+        content: {
+          childUsageKeys: Array(2).fill('').map((_child, idx) => `lb:org1:Demo_course:html:text-${idx}`),
+        },
+      },
+    } satisfies ContainerHit;
+    render(
+      <ContainerCard hit={containerWithPublishedChildren} />,
+      true,
+    );
+
+    expect((await screen.findAllByTitle(/lb:org1:Demo_course:html:text-*/)).length).toBe(2);
+    expect(screen.queryByText('+2')).not.toBeInTheDocument();
+  });
 });
diff --git a/src/library-authoring/components/ContainerCard.tsx b/src/library-authoring/components/ContainerCard.tsx
index b2f66e963f..a1d3115a61 100644
--- a/src/library-authoring/components/ContainerCard.tsx
+++ b/src/library-authoring/components/ContainerCard.tsx
@@ -12,12 +12,13 @@ import { MoreVert } from '@openedx/paragon/icons';
 import { Link } from 'react-router-dom';
 
 import { getItemIcon, getComponentStyleColor } from '../../generic/block-type-utils';
+import { getBlockType } from '../../generic/key-utils';
 import { ToastContext } from '../../generic/toast-context';
 import { type ContainerHit, PublishStatus } from '../../search-manager';
 import { useComponentPickerContext } from '../common/context/ComponentPickerContext';
 import { useLibraryContext } from '../common/context/LibraryContext';
 import { SidebarActions, useSidebarContext } from '../common/context/SidebarContext';
-import { useContainerChildren, useRemoveItemsFromCollection } from '../data/apiHooks';
+import { useRemoveItemsFromCollection } from '../data/apiHooks';
 import { useLibraryRoutes } from '../routes';
 import AddComponentWidget from './AddComponentWidget';
 import BaseCard from './BaseCard';
@@ -107,21 +108,17 @@ const ContainerMenu = ({ hit } : ContainerMenuProps) => {
 };
 
 type ContainerCardPreviewProps = {
-  containerId: string;
+  childUsageKeys: Array<string>;
   showMaxChildren?: number;
 };
 
-const ContainerCardPreview = ({ containerId, showMaxChildren = 5 }: ContainerCardPreviewProps) => {
-  const { data, isLoading, isError } = useContainerChildren(containerId);
-  if (isLoading || isError) {
-    return null;
-  }
-
-  const hiddenChildren = data.length - showMaxChildren;
+const ContainerCardPreview = ({ childUsageKeys, showMaxChildren = 5 }: ContainerCardPreviewProps) => {
+  const hiddenChildren = childUsageKeys.length - showMaxChildren;
   return (
     <Stack direction="horizontal" gap={2}>
       {
-        data.slice(0, showMaxChildren).map(({ id, blockType, displayName }, idx) => {
+        childUsageKeys.slice(0, showMaxChildren).map((usageKey, idx) => {
+          const blockType = getBlockType(usageKey);
           let blockPreview: ReactNode;
           let classNames;
 
@@ -133,7 +130,7 @@ const ContainerCardPreview = ({ containerId, showMaxChildren = 5 }: ContainerCar
               <Icon
                 src={getItemIcon(blockType)}
                 screenReaderText={blockType}
-                title={displayName}
+                title={usageKey}
               />
             );
           } else {
@@ -149,7 +146,7 @@ const ContainerCardPreview = ({ containerId, showMaxChildren = 5 }: ContainerCar
             <div
               // A container can have multiple instances of the same block
               // eslint-disable-next-line react/no-array-index-key
-              key={`${id}-${idx}`}
+              key={`${usageKey}-${idx}`}
               className={classNames}
             >
               {blockPreview}
@@ -178,6 +175,7 @@ const ContainerCard = ({ hit } : ContainerCardProps) => {
     published,
     publishStatus,
     usageKey: unitId,
+    content,
   } = hit;
 
   const numChildrenCount = showOnlyPublished ? (
@@ -188,6 +186,10 @@ const ContainerCard = ({ hit } : ContainerCardProps) => {
     showOnlyPublished ? formatted.published?.displayName : formatted.displayName
   ) ?? '';
 
+  const childUsageKeys: Array<string> = (
+    showOnlyPublished ? published?.content?.childUsageKeys : content?.childUsageKeys
+  ) ?? [];
+
   const { navigateTo } = useLibraryRoutes();
 
   const openContainer = useCallback(() => {
@@ -202,7 +204,7 @@ const ContainerCard = ({ hit } : ContainerCardProps) => {
     <BaseCard
       itemType={itemType}
       displayName={displayName}
-      preview={<ContainerCardPreview containerId={unitId} />}
+      preview={<ContainerCardPreview childUsageKeys={childUsageKeys} />}
       tags={tags}
       numChildren={numChildrenCount}
       actions={(
diff --git a/src/search-manager/data/api.ts b/src/search-manager/data/api.ts
index 549054b3fe..e1a6aeaa33 100644
--- a/src/search-manager/data/api.ts
+++ b/src/search-manager/data/api.ts
@@ -50,6 +50,7 @@ export const getContentSearchConfig = async (): Promise<{ url: string, indexName
 export interface ContentDetails {
   htmlContent?: string;
   capaContent?: string;
+  childUsageKeys?: Array<string>;
   [k: string]: any;
 }
 
@@ -151,9 +152,10 @@ export interface ContentHit extends BaseContentHit {
  * Defined in edx-platform/openedx/core/djangoapps/content/search/documents.py
  */
 export interface ContentPublishedData {
-  description?: string,
-  displayName?: string,
-  numChildren?: number,
+  description?: string;
+  displayName?: string;
+  numChildren?: number;
+  content?: ContentDetails;
 }
 
 /**
@@ -171,6 +173,9 @@ export interface CollectionHit extends BaseContentHit {
  * Information about a single container returned in the search results
  * Defined in edx-platform/openedx/core/djangoapps/content/search/documents.py
  */
+interface ContainerHitContent {
+  childUsageKeys?: string[],
+}
 export interface ContainerHit extends BaseContentHit {
   type: 'library_container';
   blockType: 'unit'; // This should be expanded to include other container types
@@ -178,6 +183,7 @@ export interface ContainerHit extends BaseContentHit {
   published?: ContentPublishedData;
   publishStatus: PublishStatus;
   formatted: BaseContentHit['formatted'] & { published?: ContentPublishedData, };
+  content?: ContainerHitContent;
 }
 
 export type HitType = ContentHit | CollectionHit | ContainerHit;