fix: UI fixes in legacy library migrator

- Keep state of all migration steps on nevigation
- Reword alert in confirm dialog
- Add scroll to help sidebar in migration
- Keep the same migration filter

src/legacy-libraries-migration/LegacyLibMigrationPage.test.tsx

@@ -162,9 +162,20 @@ describe('<LegacyLibMigrationPage />', () => {
   });
 
   it('should back to select legacy libraries', async () => {
+    const user = userEvent.setup();
     renderPage();
-    expect(await screen.findByText('Migrate Legacy Libraries')).toBeInTheDocument();
+    // The filter is Unmigrated by default
+    const filterButton = await screen.findByRole('button', { name: /unmigrated/i });
+    expect(filterButton).toBeInTheDocument();
+
+    // Clear filter to show all
+    await user.click(filterButton);
+    const clearButton = await screen.findByRole('button', { name: /clear filter/i });
+    await user.click(clearButton);
+
     expect(await screen.findByText('MBA')).toBeInTheDocument();
+    expect(await screen.findByText('Legacy library 1')).toBeInTheDocument();
+    expect(await screen.findByText('MBA 1')).toBeInTheDocument();
 
     const legacyLibrary = screen.getByRole('checkbox', { name: 'MBA' });
     legacyLibrary.click();
@@ -178,7 +189,13 @@ describe('<LegacyLibMigrationPage />', () => {
     const backButton = screen.getByRole('button', { name: /back/i });
     backButton.click();
 
+    // The selected legacy library remains checked
+    expect(legacyLibrary).toBeChecked();
+
+    // The filter remains the same
     expect(await screen.findByText('MBA')).toBeInTheDocument();
+    expect(await screen.findByText('Legacy library 1')).toBeInTheDocument();
+    expect(await screen.findByText('MBA 1')).toBeInTheDocument();
   });
 
   it('should select a library destination', async () => {
@@ -230,6 +247,8 @@ describe('<LegacyLibMigrationPage />', () => {
     backButton.click();
 
     expect(await screen.findByText('Test Library 1')).toBeInTheDocument();
+    // The selected v2 library remains checked
+    expect(radioButton).toBeChecked();
   });
 
   it('should open the create new library modal', async () => {

src/legacy-libraries-migration/LegacyLibMigrationPage.tsx

@@ -80,6 +80,7 @@ export const LegacyLibMigrationPage = () => {
   const [currentStep, setCurrentStep] = useState<MigrationStep>('select-libraries');
   const [isExitModalOpen, openExitModal, closeExitModal] = useToggle(false);
   const [legacyLibraries, setLegacyLibraries] = useState<LibraryV1Data[]>([]);
+  const [migrationFilter, setMigrationFilter] = useState<Filter[]>([Filter.unmigrated]);
   const [destinationLibrary, setDestination] = useState<ContentLibrary>();
   const [confirmationButtonState, setConfirmationButtonState] = useState('default');
   const migrate = useUpdateContainerCollections();
@@ -127,7 +128,6 @@ export const LegacyLibMigrationPage = () => {
         openExitModal();
         break;
       case 'select-destination':
-        setDestination(undefined);
         setCurrentStep('select-libraries');
         break;
       case 'confirmation-view':
@@ -193,7 +193,8 @@ export const LegacyLibMigrationPage = () => {
                         selectedIds={legacyLibrariesIds}
                         handleCheck={handleUpdateLegacyLibraries}
                         hideMigationAlert
-                        initialFilter={[Filter.unmigrated]}
+                        migrationFilter={migrationFilter}
+                        setMigrationFilter={setMigrationFilter}
                         setSelectedLibraries={setLegacyLibraries}
                       />
                     </Stepper.Step>
@@ -221,7 +222,7 @@ export const LegacyLibMigrationPage = () => {
                   </Stepper>
                 </div>
               </Container>
-              <div className="content-buttons d-flex justify-content-between pl-6 pr-6 bg-white">
+              <div className="content-buttons d-flex justify-content-between pl-6 pr-6 bg-white box-shadow-up-1">
                 <Button className="mt-2 mb-2" variant="outline-primary" onClick={handleBack}>
                   {currentStep === 'select-libraries'
                     ? intl.formatMessage(messages.cancel)

src/legacy-libraries-migration/index.scss

@@ -49,6 +49,8 @@
   position: sticky;
   top: 0;
   right: 0;
+  height: 100vh;
+  overflow-y: auto;
 
   hr {
     width: 100%;

src/legacy-libraries-migration/messages.ts

@@ -72,8 +72,9 @@ const messages = defineMessages({
   confirmationViewAlert: {
     id: 'legacy-libraries-migration.select-destination.alert.text',
     defaultMessage: 'These {count, plural, one {{count} legacy library} other {{count} legacy libraries}}'
-      + ' will be migrated to <b>{libraryName}</b> and organized as collections. Any legacy libraries that are used in'
-      + ' problem banks will maintain their link with migrated content the first time they are migrated.',
+      + ' will be migrated to <b>{libraryName}</b> and organized as collections. Legacy library content used'
+      + ' in courses will continue to work as-is. To receive any future changes to migrated content,'
+      + ' you must update these references within your course.',
     description: 'Alert text in the confirmation step of the legacy libraries migration page.',
   },
   previouslyMigratedAlert: {

src/studio-home/tabs-section/index.tsx

@@ -14,7 +14,7 @@ import { useNavigate, useLocation } from 'react-router-dom';
 import { RequestStatus } from '@src/data/constants';
 import { getLoadingStatuses, getStudioHomeData } from '../data/selectors';
 import messages from './messages';
-import { LibrariesList } from './libraries-tab';
+import { BaseFilterState, Filter, LibrariesList } from './libraries-tab';
 import LibrariesV2List from './libraries-v2-tab/index';
 import CoursesTab from './courses-tab';
 import { WelcomeLibrariesV2Alert } from './libraries-v2-tab/WelcomeLibrariesV2Alert';
@@ -29,6 +29,7 @@ const TabsSection = ({
   const intl = useIntl();
   const navigate = useNavigate();
   const { pathname } = useLocation();
+  const [migrationFilter, setMigrationFilter] = useState<Filter[]>(BaseFilterState);
   const TABS_LIST = {
     courses: 'courses',
     libraries: 'libraries',
@@ -121,7 +122,10 @@ const TabsSection = ({
               : messages.librariesTabTitle,
           )}
         >
-          <LibrariesList />
+          <LibrariesList
+            migrationFilter={migrationFilter}
+            setMigrationFilter={setMigrationFilter}
+          />
         </Tab>,
       );
     }
@@ -137,7 +141,7 @@ const TabsSection = ({
     }
 
     return tabs;
-  }, [showNewCourseContainer, isLoadingCourses]);
+  }, [showNewCourseContainer, isLoadingCourses, migrationFilter]);
 
   const handleSelectTab = (tab: TabKeyType) => {
     if (tab === TABS_LIST.courses) {

src/studio-home/tabs-section/libraries-tab/index.tsx

@@ -70,7 +70,7 @@ export enum Filter {
   unmigrated = 'unmigrated',
 }
 
-const BaseFilterState = Object.values(Filter);
+export const BaseFilterState = Object.values(Filter);
 
 interface MigrationFilterProps {
   filters: Filter[];
@@ -146,7 +146,12 @@ interface LibrariesListProps {
   handleCheck?: (library: LibraryV1Data, action: 'add' | 'remove') => void;
   setSelectedLibraries?: (libraries: LibraryV1Data[]) => void;
   hideMigationAlert?: boolean;
-  initialFilter?: Filter[];
+  // We lift `migrationFilter` and `setMigrationFilter` into props
+  // so that the filter state is maintained consistently across different
+  // steps of the legacy libraries migration flow, and to allow
+  // parent components to control and persist the filter context.
+  migrationFilter: Filter[];
+  setMigrationFilter: React.Dispatch<React.SetStateAction<Filter[]>>;
 }
 
 export const LibrariesList = ({
@@ -154,13 +159,13 @@ export const LibrariesList = ({
   handleCheck,
   setSelectedLibraries,
   hideMigationAlert = false,
-  initialFilter = BaseFilterState,
+  migrationFilter,
+  setMigrationFilter,
 }: LibrariesListProps) => {
   const intl = useIntl();
   const { isPending, data, isError } = useLibrariesV1Data();
   const [currentPage, setCurrentPage] = useState<number>(1);
   const [search, setSearch] = useState<string>('');
-  const [migrationFilter, setMigrationFilter] = useState<Filter[]>(initialFilter);
 
   let filteredData = findInValues(data?.libraries, search || '') || [];
   if (migrationFilter.length === 1) {