diff --git a/includes/class-convertkit-resource-landing-pages.php b/includes/class-convertkit-resource-landing-pages.php
index 642f5deb5..bda4af770 100644
--- a/includes/class-convertkit-resource-landing-pages.php
+++ b/includes/class-convertkit-resource-landing-pages.php
@@ -56,6 +56,84 @@ public function __construct( $context = 'landing_pages' ) {
 
 	}
 
+	/**
+	 * Returns all non-legacy landing pages (v4 pages with an `embed_url`
+	 * property). Legacy landing pages have a `url` property instead and are
+	 * excluded here.
+	 *
+	 * @since   3.3.7
+	 *
+	 * @return  bool|array
+	 */
+	public function get_non_legacy() {
+
+		$resources = $this->get();
+		if ( ! $resources ) {
+			return false;
+		}
+
+		$non_legacy = array();
+		foreach ( $resources as $id => $landing_page ) {
+			if ( isset( $landing_page['url'] ) ) {
+				continue;
+			}
+			$non_legacy[ $id ] = $landing_page;
+		}
+
+		return $non_legacy;
+
+	}
+
+	/**
+	 * Returns whether any non-legacy landing pages exist in the options table.
+	 *
+	 * @since   3.3.7
+	 *
+	 * @return  bool
+	 */
+	public function non_legacy_exist() {
+
+		return (bool) $this->get_non_legacy();
+
+	}
+
+	/**
+	 * Determines whether the given identifier refers to a legacy landing page.
+	 *
+	 * Handles both storage shapes: a URL string (as saved by Plugin versions
+	 * < 1.9.6 which stored the landing page URL directly on the post), and a
+	 * numeric ID that resolves to a resource entry containing a `url` key.
+	 *
+	 * @since   3.3.7
+	 *
+	 * @param   int|string $id_or_url  Landing Page ID or URL.
+	 * @return  bool
+	 */
+	public function is_legacy( $id_or_url ) {
+
+		// Bail if no value.
+		if ( ! $id_or_url ) {
+			return false;
+		}
+
+		// If the value is a URL string, it's a legacy landing page as stored
+		// by Plugin versions < 1.9.6.
+		if ( is_string( $id_or_url ) && strstr( $id_or_url, 'http' ) ) {
+			return true;
+		}
+
+		// Otherwise resolve the ID against the cached resources.
+		$landing_page = $this->get_by_id( (int) $id_or_url );
+
+		if ( ! $landing_page ) {
+			return false;
+		}
+
+		// Legacy landing pages carry a `url` key; v4 pages carry `embed_url`.
+		return isset( $landing_page['url'] );
+
+	}
+
 	/**
 	 * Returns the HTML/JS markup for the given Landing Page ID
 	 *
diff --git a/includes/plugin-sidebars/class-convertkit-plugin-sidebar-post-settings.php b/includes/plugin-sidebars/class-convertkit-plugin-sidebar-post-settings.php
index bd68e3a06..36ceadbc7 100644
--- a/includes/plugin-sidebars/class-convertkit-plugin-sidebar-post-settings.php
+++ b/includes/plugin-sidebars/class-convertkit-plugin-sidebar-post-settings.php
@@ -145,13 +145,21 @@ public function get_fields() {
 			}
 		}
 
-		// Get Landing Pages.
-		$landing_pages = array(
+		// Get Landing Pages. Non-legacy pages populate the dropdown; legacy
+		// pages are exposed separately as a fallback so a previously-saved
+		// legacy landing page remains visible as the current selection
+		// without offering other legacy pages as new choices.
+		$landing_pages        = array(
 			'0' => esc_html__( 'None', 'convertkit' ),
 		);
+		$legacy_landing_pages = array();
 		if ( $convertkit_landing_pages->exist() ) {
 			foreach ( $convertkit_landing_pages->get() as $landing_page ) {
-				$landing_pages[ absint( $landing_page['id'] ) ] = sanitize_text_field( $landing_page['name'] );
+				if ( isset( $landing_page['url'] ) ) {
+					$legacy_landing_pages[ absint( $landing_page['id'] ) ] = sanitize_text_field( $landing_page['name'] );
+				} else {
+					$landing_pages[ absint( $landing_page['id'] ) ] = sanitize_text_field( $landing_page['name'] );
+				}
 			}
 		}
 
@@ -251,6 +259,7 @@ public function get_fields() {
 					),
 				),
 				'values'        => $landing_pages,
+				'legacy_values' => $legacy_landing_pages,
 				'post_type'     => 'page',
 				'resource_type' => 'landing_pages',
 			),
diff --git a/tests/EndToEnd/landing-pages/BlockEditorLandingPageCest.php b/tests/EndToEnd/landing-pages/BlockEditorLandingPageCest.php
index bdd82bf29..b210fd1e0 100644
--- a/tests/EndToEnd/landing-pages/BlockEditorLandingPageCest.php
+++ b/tests/EndToEnd/landing-pages/BlockEditorLandingPageCest.php
@@ -173,83 +173,6 @@ public function testLandingPageCharacterEncoding(EndToEndTester $I)
 		$I->seeInSource('Vantar þinn ungling sjálfstraust í stærðfræði?');
 	}
 
-	/**
-	 * Test that the Legacy Landing Page specified in the Page Settings works when
-	 * creating and viewing a new WordPress Page.
-	 *
-	 * @since   1.9.6.3
-	 *
-	 * @param   EndToEndTester $I  Tester.
-	 */
-	public function testAddNewPageUsingDefinedLegacyLandingPage(EndToEndTester $I)
-	{
-		// Add a Page using the Gutenberg editor.
-		$I->addGutenbergPage(
-			$I,
-			title: 'Kit: Page: Landing Page: ' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME']
-		);
-
-		// Configure metabox's Landing Page setting to value specified in the .env file.
-		$I->configurePluginSidebarSettings(
-			$I,
-			landingPage: $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME']
-		);
-
-		// Publish and view the Page on the frontend site.
-		$I->publishAndViewGutenbergPage($I);
-
-		// Confirm that the basic HTML structure is correct.
-		$I->seeLandingPageOutput($I);
-
-		// Confirm that the Kit Landing Page displays.
-		$I->dontSeeElementInDOM('body.page'); // WordPress didn't load its template, which is correct.
-		$I->seeInSource('<form id="ck_subscribe_form" class="ck_subscribe_form" action="https://app.kit.com/landing_pages/' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'] . '/subscribe" data-remote="true">'); // Kit injected its Landing Page Form, which is correct.
-	}
-
-	/**
-	 * Test that the WordPress site icon is output as the favicon on a Legacy Landing Page,
-	 * when defined.
-	 *
-	 * @since   2.3.0
-	 *
-	 * @param   EndToEndTester $I  Tester.
-	 */
-	public function testLegacyLandingPageSiteIcon(EndToEndTester $I)
-	{
-		// Define a WordPress Site Icon.
-		$imageID = $I->haveAttachmentInDatabase(codecept_data_dir('icon.png'));
-		$I->haveOptionInDatabase('site_icon', $imageID);
-
-		// Add a Page using the Gutenberg editor.
-		$I->addGutenbergPage(
-			$I,
-			title: 'Kit: Page: Legacy Landing Page: Site Icon: ' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME']
-		);
-
-		// Configure metabox's Landing Page setting to value specified in the .env file.
-		$I->configurePluginSidebarSettings(
-			$I,
-			landingPage: $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME']
-		);
-
-		// Publish and view the Page on the frontend site.
-		$I->publishAndViewGutenbergPage($I);
-
-		// Confirm that the basic HTML structure is correct.
-		$I->seeLandingPageOutput($I);
-
-		// Confirm the WordPress Site Icon displays.
-		$I->seeInSource('<link rel="icon" href="' . $_ENV['WORDPRESS_URL'] . '/wp-content/uploads/' . date( 'Y' ) . '/' . date( 'm' ) . '/icon-150x150.png" sizes="32x32">');
-		$I->seeInSource('<link rel="icon" href="' . $_ENV['WORDPRESS_URL'] . '/wp-content/uploads/' . date( 'Y' ) . '/' . date( 'm' ) . '/icon-300x300.png" sizes="192x192">');
-		$I->seeInSource('<link rel="apple-touch-icon" href="' . $_ENV['WORDPRESS_URL'] . '/wp-content/uploads/' . date( 'Y' ) . '/' . date( 'm' ) . '/icon-300x300.png">');
-		$I->seeInSource('<meta name="msapplication-TileImage" content="' . $_ENV['WORDPRESS_URL'] . '/wp-content/uploads/' . date( 'Y' ) . '/' . date( 'm' ) . '/icon-300x300.png">');
-		$I->dontSeeInSource('<link rel="shortcut icon" type="image/x-icon" href="https://pages.kit.com/templates/favicon.ico">');
-
-		// Confirm that the Kit Landing Page displays.
-		$I->dontSeeElementInDOM('body.page'); // WordPress didn't load its template, which is correct.
-		$I->seeInSource('<form id="ck_subscribe_form" class="ck_subscribe_form" action="https://app.kit.com/landing_pages/' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'] . '/subscribe" data-remote="true">'); // Kit injected its Landing Page Form, which is correct.
-	}
-
 	/**
 	 * Test that the Legacy Landing Page specified in the Page Settings works when
 	 * the Landing Page was defined by the Kit Plugin < 1.9.6, which used a URL
@@ -572,6 +495,73 @@ public function testAddNewPostDoesNotDisplayLandingPageOption(EndToEndTester $I)
 		$I->publishGutenbergPage($I);
 	}
 
+	/**
+	 * Test that the Gutenberg plugin sidebar's Landing Page dropdown does not
+	 * offer legacy landing pages as a selection option.
+	 *
+	 * @since   3.3.7
+	 *
+	 * @param   EndToEndTester $I  Tester.
+	 */
+	public function testLegacyLandingPagesExcludedFromPluginSidebar(EndToEndTester $I)
+	{
+		// Add a Page using the Gutenberg editor.
+		$I->addGutenbergPage(
+			$I,
+			title: 'Kit: Page: No Legacy Landing Pages In Plugin Sidebar'
+		);
+
+		// Open the Plugin sidebar so the Landing Page dropdown renders.
+		$I->openPluginSidebarSettings($I);
+		$landingPageSelectXPath = '//label[text()="Landing Page"]/following::select[1]';
+		$I->waitForElementVisible($landingPageSelectXPath);
+		$I->dontSee(
+			$_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME'],
+			$landingPageSelectXPath
+		);
+	}
+
+	/**
+	 * Test that a Page preseeded with a legacy landing page ID in its post
+	 * meta continues to display that legacy landing page as the selected
+	 * option in the Gutenberg plugin sidebar.
+	 *
+	 * @since   3.3.7
+	 *
+	 * @param   EndToEndTester $I  Tester.
+	 */
+	public function testPluginSidebarPreservesSelectedLegacyLandingPage(EndToEndTester $I)
+	{
+		// Preseed a Page with a legacy landing page ID in its Kit post meta.
+		$pageID = $I->havePageInDatabase(
+			[
+				'post_type'   => 'page',
+				'post_status' => 'publish',
+				'post_title'  => 'Kit: Page: Plugin Sidebar Preserves Legacy Landing Page',
+				'post_name'   => 'kit-plugin-sidebar-preserves-legacy-landing-page',
+				'meta_input'  => [
+					'_wp_convertkit_post_meta' => [
+						'form'         => '0',
+						'landing_page' => (string) $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'],
+						'tag'          => '',
+					],
+				],
+			]
+		);
+
+		// Open the Gutenberg edit screen and the Plugin sidebar. Confirm the
+		// legacy landing page is the selected option, even though it is no
+		// longer offered as a new selection choice.
+		$I->amOnAdminPage('post.php?post=' . $pageID . '&action=edit');
+		$I->openPluginSidebarSettings($I);
+		$landingPageSelectXPath = '//label[text()="Landing Page"]/following::select[1]';
+		$I->waitForElementVisible($landingPageSelectXPath);
+		$I->seeOptionIsSelected(
+			$landingPageSelectXPath,
+			$_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME']
+		);
+	}
+
 	/**
 	 * Deactivate and reset Plugin(s) after each test, if the test passes.
 	 * We don't use _after, as this would provide a screenshot of the Plugin
diff --git a/tests/EndToEnd/landing-pages/ClassicEditorLandingPageCest.php b/tests/EndToEnd/landing-pages/ClassicEditorLandingPageCest.php
index a38dedc22..39ac25867 100644
--- a/tests/EndToEnd/landing-pages/ClassicEditorLandingPageCest.php
+++ b/tests/EndToEnd/landing-pages/ClassicEditorLandingPageCest.php
@@ -188,89 +188,6 @@ public function testLandingPageCharacterEncoding(EndToEndTester $I)
 		$I->seeInSource('Vantar þinn ungling sjálfstraust í stærðfræði?');
 	}
 
-	/**
-	 * Test that the Legacy Landing Page specified in the Page Settings works when
-	 * creating and viewing a new WordPress Page.
-	 *
-	 * @since   3.3.0
-	 *
-	 * @param   EndToEndTester $I  Tester.
-	 */
-	public function testAddNewPageUsingDefinedLegacyLandingPage(EndToEndTester $I)
-	{
-		// Add a Page using the Classic Editor.
-		$I->addClassicEditorPage(
-			$I,
-			title: 'Kit: Page: Landing Page: ' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME']
-		);
-
-		// Configure metabox's Landing Page setting to value specified in the .env file.
-		$I->configureMetaboxSettings(
-			$I,
-			metabox: 'wp-convertkit-meta-box',
-			configuration: [
-				'landing_page' => [ 'select2', $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME'] ],
-			]
-		);
-
-		// Publish and view the Page on the frontend site.
-		$I->publishAndViewClassicEditorPage($I);
-
-		// Confirm that the basic HTML structure is correct.
-		$I->seeLandingPageOutput($I);
-
-		// Confirm that the Kit Landing Page displays.
-		$I->dontSeeElementInDOM('body.page'); // WordPress didn't load its template, which is correct.
-		$I->seeInSource('<form id="ck_subscribe_form" class="ck_subscribe_form" action="https://app.kit.com/landing_pages/' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'] . '/subscribe" data-remote="true">'); // Kit injected its Landing Page Form, which is correct.
-	}
-
-	/**
-	 * Test that the WordPress site icon is output as the favicon on a Legacy Landing Page,
-	 * when defined.
-	 *
-	 * @since   3.3.0
-	 *
-	 * @param   EndToEndTester $I  Tester.
-	 */
-	public function testLegacyLandingPageSiteIcon(EndToEndTester $I)
-	{
-		// Define a WordPress Site Icon.
-		$imageID = $I->haveAttachmentInDatabase(codecept_data_dir('icon.png'));
-		$I->haveOptionInDatabase('site_icon', $imageID);
-
-		// Add a Page using the Classic Editor.
-		$I->addClassicEditorPage(
-			$I,
-			title: 'Kit: Page: Legacy Landing Page: Site Icon: ' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME']
-		);
-
-		// Configure metabox's Landing Page setting to value specified in the .env file.
-		$I->configureMetaboxSettings(
-			$I,
-			metabox: 'wp-convertkit-meta-box',
-			configuration: [
-				'landing_page' => [ 'select2', $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME'] ],
-			]
-		);
-
-		// Publish and view the Page on the frontend site.
-		$I->publishAndViewClassicEditorPage($I);
-
-		// Confirm that the basic HTML structure is correct.
-		$I->seeLandingPageOutput($I);
-
-		// Confirm the WordPress Site Icon displays.
-		$I->seeInSource('<link rel="icon" href="' . $_ENV['WORDPRESS_URL'] . '/wp-content/uploads/' . date( 'Y' ) . '/' . date( 'm' ) . '/icon-150x150.png" sizes="32x32">');
-		$I->seeInSource('<link rel="icon" href="' . $_ENV['WORDPRESS_URL'] . '/wp-content/uploads/' . date( 'Y' ) . '/' . date( 'm' ) . '/icon-300x300.png" sizes="192x192">');
-		$I->seeInSource('<link rel="apple-touch-icon" href="' . $_ENV['WORDPRESS_URL'] . '/wp-content/uploads/' . date( 'Y' ) . '/' . date( 'm' ) . '/icon-300x300.png">');
-		$I->seeInSource('<meta name="msapplication-TileImage" content="' . $_ENV['WORDPRESS_URL'] . '/wp-content/uploads/' . date( 'Y' ) . '/' . date( 'm' ) . '/icon-300x300.png">');
-		$I->dontSeeInSource('<link rel="shortcut icon" type="image/x-icon" href="https://pages.kit.com/templates/favicon.ico">');
-
-		// Confirm that the Kit Landing Page displays.
-		$I->dontSeeElementInDOM('body.page'); // WordPress didn't load its template, which is correct.
-		$I->seeInSource('<form id="ck_subscribe_form" class="ck_subscribe_form" action="https://app.kit.com/landing_pages/' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'] . '/subscribe" data-remote="true">'); // Kit injected its Landing Page Form, which is correct.
-	}
-
 	/**
 	 * Test that the Legacy Landing Page specified in the Page Settings works when
 	 * the Landing Page was defined by the Kit Plugin < 1.9.6, which used a URL
@@ -605,6 +522,124 @@ public function testAddNewPostDoesNotDisplayLandingPageOption(EndToEndTester $I)
 		$I->dontSeeElementInDOM('form[data-sv-form]');
 	}
 
+	/**
+	 * Test that the Post metabox Landing Page dropdown does not offer legacy
+	 * landing pages as a selection option.
+	 *
+	 * @since   3.3.7
+	 *
+	 * @param   EndToEndTester $I  Tester.
+	 */
+	public function testLegacyLandingPagesExcludedFromMetaboxDropdown(EndToEndTester $I)
+	{
+		// Add a Page using the Classic Editor.
+		$I->amOnAdminPage('post-new.php?post_type=page');
+
+		// The metabox Landing Page dropdown should not offer the legacy page
+		// as an option.
+		$I->dontSeeElementInDOM('#wp-convertkit-landing_page option[value="' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'] . '"]');
+		$I->dontSee(
+			$_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME'],
+			'#wp-convertkit-landing_page'
+		);
+	}
+
+	/**
+	 * Test that a Page preseeded with a legacy landing page ID in its post
+	 * meta continues to display that legacy landing page as the selected
+	 * option in the Classic editor metabox, and continues to render the
+	 * legacy landing page on the frontend.
+	 *
+	 * Also asserts that the WordPress site icon replaces the Kit favicon on
+	 * a legacy landing page, previously covered by the deleted
+	 * `testLegacyLandingPageSiteIcon` test that selected the legacy page
+	 * from the dropdown.
+	 *
+	 * @since   3.3.7
+	 *
+	 * @param   EndToEndTester $I  Tester.
+	 */
+	public function testMetaboxPreservesSelectedLegacyLandingPageByID(EndToEndTester $I)
+	{
+		// Define a WordPress Site Icon so the favicon-replacement assertion
+		// below has something to match.
+		$imageID = $I->haveAttachmentInDatabase(codecept_data_dir('icon.png'));
+		$I->haveOptionInDatabase('site_icon', $imageID);
+
+		// Preseed a Page with a legacy landing page ID in its Kit post meta.
+		$pageID = $I->havePageInDatabase(
+			[
+				'post_type'   => 'page',
+				'post_status' => 'publish',
+				'post_title'  => 'Kit: Page: Preserves Legacy Landing Page ID',
+				'post_name'   => 'kit-preserves-legacy-landing-page-id',
+				'meta_input'  => [
+					'_wp_convertkit_post_meta' => [
+						'form'         => '0',
+						'landing_page' => (string) $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'],
+						'tag'          => '',
+					],
+				],
+			]
+		);
+
+		// Open the edit screen and confirm the legacy landing page shows as
+		// the selected option in the metabox dropdown, even though it is no
+		// longer offered as a new selection choice.
+		$I->amOnAdminPage('post.php?post=' . $pageID . '&action=edit');
+		$I->seeElementInDOM('#wp-convertkit-landing_page option[value="' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'] . '"]');
+		$I->seeOptionIsSelected(
+			'#wp-convertkit-landing_page',
+			$_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME']
+		);
+
+		// View the page on the frontend and confirm the legacy landing page
+		// still renders, including the WordPress site icon replacing the Kit
+		// favicon.
+		$I->amOnPage('/?p=' . $pageID);
+		$I->dontSeeElementInDOM('body.page');
+		$I->seeInSource('<form id="ck_subscribe_form" class="ck_subscribe_form" action="https://app.kit.com/landing_pages/' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'] . '/subscribe" data-remote="true">');
+		$I->seeInSource('<link rel="icon" href="' . $_ENV['WORDPRESS_URL'] . '/wp-content/uploads/' . date('Y') . '/' . date('m') . '/icon-150x150.png" sizes="32x32">');
+		$I->dontSeeInSource('<link rel="shortcut icon" type="image/x-icon" href="https://pages.kit.com/templates/favicon.ico">');
+	}
+
+	/**
+	 * Test that a Page preseeded with a legacy landing page URL string in its
+	 * post meta (as saved by Plugin versions < 1.9.6) continues to display
+	 * that legacy landing page as the selected option in the Classic editor
+	 * metabox.
+	 *
+	 * @since   3.3.7
+	 *
+	 * @param   EndToEndTester $I  Tester.
+	 */
+	public function testMetaboxPreservesSelectedLegacyLandingPageByURL(EndToEndTester $I)
+	{
+		// Preseed a Page with a legacy landing page URL string in its Kit
+		// post meta, mirroring how < 1.9.6 of the Plugin stored the value.
+		$pageID = $I->havePageInDatabase(
+			[
+				'post_type'   => 'page',
+				'post_status' => 'publish',
+				'post_title'  => 'Kit: Page: Preserves Legacy Landing Page URL',
+				'post_name'   => 'kit-preserves-legacy-landing-page-url',
+				'meta_input'  => [
+					'_wp_convertkit_post_meta' => [
+						'form'         => '0',
+						'landing_page' => $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_URL'],
+						'tag'          => '',
+					],
+				],
+			]
+		);
+
+		// Open the edit screen and confirm the legacy landing page shows as
+		// selected. When stored as a URL, the appended option carries the
+		// URL as its value.
+		$I->amOnAdminPage('post.php?post=' . $pageID . '&action=edit');
+		$I->seeElementInDOM('#wp-convertkit-landing_page option[value="' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_URL'] . '"]');
+	}
+
 	/**
 	 * Deactivate and reset Plugin(s) after each test, if the test passes.
 	 * We don't use _after, as this would provide a screenshot of the Plugin
diff --git a/tests/EndToEnd/landing-pages/PageLandingPageSetupWizardCest.php b/tests/EndToEnd/landing-pages/PageLandingPageSetupWizardCest.php
index f4ecfd2e7..af0a795c5 100644
--- a/tests/EndToEnd/landing-pages/PageLandingPageSetupWizardCest.php
+++ b/tests/EndToEnd/landing-pages/PageLandingPageSetupWizardCest.php
@@ -241,45 +241,26 @@ public function testAddNewLandingPage(EndToEndTester $I)
 	}
 
 	/**
-	 * Test that the Add New Landing Page generates the expected Page
-	 * and displays the selected Legacy Landing Page.
+	 * Test that the Setup Wizard's Landing Page picker does not offer legacy
+	 * landing pages as a selection option.
 	 *
-	 * @since   2.5.5
+	 * @since   3.3.7
 	 *
 	 * @param   EndToEndTester $I  Tester.
 	 */
-	public function testAddNewLegacyLandingPage(EndToEndTester $I)
+	public function testLegacyLandingPagesExcludedFromSetupWizard(EndToEndTester $I)
 	{
 		// Setup Plugin and navigate to Add New Landing Page screen.
 		$this->_setupAndLoadAddNewLandingPageScreen($I);
 
-		// Select a landing page and enter a slug.
-		$I->fillSelect2Field(
-			$I,
-			container: '#select2-landing_page-container',
-			value: $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME']
+		// The Setup Wizard's landing page dropdown should not offer the
+		// legacy landing page as an option.
+		$I->waitForElementVisible('#landing_page');
+		$I->dontSeeElementInDOM('#landing_page option[value="' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'] . '"]');
+		$I->dontSee(
+			$_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_NAME'],
+			'#landing_page'
 		);
-		$I->fillField('post_name', 'landing-page-setup-wizard');
-
-		// Click create button.
-		$I->click('Create');
-
-		// Confirm that setup completed.
-		$I->waitForElementVisible('div.convertkit-setup-wizard-grid');
-		$I->see('Setup complete');
-
-		// Click the button to view the landing page.
-		$I->click('View landing page');
-
-		// Wait for the Landing Page to load.
-		$I->waitForElementNotVisible('body.convertkit');
-
-		// Confirm that the basic HTML structure is correct.
-		$I->seeLandingPageOutput($I);
-
-		// Confirm that the Kit Landing Page displays.
-		$I->dontSeeElementInDOM('body.page'); // WordPress didn't load its template, which is correct.
-		$I->seeInSource('<form id="ck_subscribe_form" class="ck_subscribe_form" action="https://app.kit.com/landing_pages/' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'] . '/subscribe" data-remote="true">'); // Kit injected its Landing Page Form, which is correct.
 	}
 
 	/**
diff --git a/tests/Integration/ResourceLandingPagesTest.php b/tests/Integration/ResourceLandingPagesTest.php
index bb1624fc0..8ed0841b6 100644
--- a/tests/Integration/ResourceLandingPagesTest.php
+++ b/tests/Integration/ResourceLandingPagesTest.php
@@ -279,4 +279,82 @@ public function testGetHTMLWithLegacyLandingPageID()
 		$this->assertNotInstanceOf(\WP_Error::class, $result);
 		$this->assertStringContainsString('<form id="ck_subscribe_form" class="ck_subscribe_form" action="https://app.kit.com/landing_pages/' . $_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'] . '/subscribe" data-remote="true">', $result);
 	}
+
+	/**
+	 * Test that get_non_legacy() returns v4 landing pages and excludes legacy
+	 * pages (identified by the presence of a `url` key).
+	 *
+	 * @since   3.3.7
+	 */
+	public function testGetNonLegacy()
+	{
+		$result = $this->resource->get_non_legacy();
+
+		$this->assertIsArray($result);
+
+		// v4 landing pages should be present.
+		$this->assertArrayHasKey($_ENV['CONVERTKIT_API_LANDING_PAGE_ID'], $result);
+
+		// Legacy landing page should NOT be present.
+		$this->assertArrayNotHasKey($_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID'], $result);
+
+		// Every returned page should have `embed_url` and no `url` key.
+		foreach ($result as $landing_page) {
+			$this->assertArrayNotHasKey('url', $landing_page);
+			$this->assertArrayHasKey('embed_url', $landing_page);
+		}
+	}
+
+	/**
+	 * Test that non_legacy_exist() returns true when v4 landing pages exist
+	 * in the resources cache.
+	 *
+	 * @since   3.3.7
+	 */
+	public function testNonLegacyExist()
+	{
+		$this->assertTrue($this->resource->non_legacy_exist());
+	}
+
+	/**
+	 * Test that is_legacy() returns true for a legacy landing page ID.
+	 *
+	 * @since   3.3.7
+	 */
+	public function testIsLegacyWithLegacyID()
+	{
+		$this->assertTrue($this->resource->is_legacy($_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_ID']));
+	}
+
+	/**
+	 * Test that is_legacy() returns true when passed a URL string, matching
+	 * how Plugin versions < 1.9.6 stored legacy landing pages.
+	 *
+	 * @since   3.3.7
+	 */
+	public function testIsLegacyWithURLString()
+	{
+		$this->assertTrue($this->resource->is_legacy($_ENV['CONVERTKIT_API_LEGACY_LANDING_PAGE_URL']));
+	}
+
+	/**
+	 * Test that is_legacy() returns false for a v4 landing page ID.
+	 *
+	 * @since   3.3.7
+	 */
+	public function testIsLegacyWithV4ID()
+	{
+		$this->assertFalse($this->resource->is_legacy($_ENV['CONVERTKIT_API_LANDING_PAGE_ID']));
+	}
+
+	/**
+	 * Test that is_legacy() returns false for a landing page ID that doesn't
+	 * resolve to any resource entry.
+	 *
+	 * @since   3.3.7
+	 */
+	public function testIsLegacyWithInvalidID()
+	{
+		$this->assertFalse($this->resource->is_legacy(12345));
+	}
 }
diff --git a/views/backend/post/meta-box.php b/views/backend/post/meta-box.php
index 35be6c9d7..1db6a84fe 100644
--- a/views/backend/post/meta-box.php
+++ b/views/backend/post/meta-box.php
@@ -69,15 +69,30 @@
 						<select name="wp-convertkit[landing_page]" id="wp-convertkit-landing_page" class="convertkit-select2">
 							<option <?php selected( '', $convertkit_post->get_landing_page() ); ?> value="0" data-preserve-on-refresh="1"><?php esc_html_e( 'None', 'convertkit' ); ?></option>
 							<?php
-							if ( $convertkit_landing_pages->exist() ) {
-								foreach ( $convertkit_landing_pages->get() as $landing_page ) {
-									if ( isset( $convertkit_landing_page['url'] ) ) {
-										?>
-										<option value="<?php echo esc_attr( $landing_page['url'] ); ?>"<?php selected( $landing_page['url'], $convertkit_post->get_landing_page() ); ?>><?php echo esc_attr( $landing_page['name'] ); ?></option>
-										<?php
-									} else {
+							$non_legacy_landing_pages = $convertkit_landing_pages->get_non_legacy();
+							if ( is_array( $non_legacy_landing_pages ) ) {
+								foreach ( $non_legacy_landing_pages as $landing_page ) {
+									?>
+									<option value="<?php echo esc_attr( $landing_page['id'] ); ?>"<?php selected( $landing_page['id'], $convertkit_post->get_landing_page() ); ?>><?php echo esc_attr( $landing_page['name'] ); ?></option>
+									<?php
+								}
+							}
+
+							// If the currently-saved landing page is a legacy resource, append
+							// it here so the dropdown truthfully reflects the saved value
+							// without offering other legacy pages as new selection choices.
+							$current_landing_page = $convertkit_post->get_landing_page();
+							if ( $current_landing_page && $convertkit_landing_pages->is_legacy( $current_landing_page ) ) {
+								// Pre-1.9.6 storage: the saved value is the legacy URL itself.
+								if ( is_string( $current_landing_page ) && strstr( $current_landing_page, 'http' ) ) {
+									?>
+									<option value="<?php echo esc_attr( $current_landing_page ); ?>" selected><?php echo esc_attr( $current_landing_page ); ?></option>
+									<?php
+								} else {
+									$legacy_landing_page = $convertkit_landing_pages->get_by_id( (int) $current_landing_page );
+									if ( $legacy_landing_page ) {
 										?>
-										<option value="<?php echo esc_attr( $landing_page['id'] ); ?>"<?php selected( $landing_page['id'], $convertkit_post->get_landing_page() ); ?>><?php echo esc_attr( $landing_page['name'] ); ?></option>
+										<option value="<?php echo esc_attr( $legacy_landing_page['id'] ); ?>" selected><?php echo esc_attr( $legacy_landing_page['name'] ); ?></option>
 										<?php
 									}
 								}
diff --git a/views/backend/setup-wizard/convertkit-landing-page-setup/content-start.php b/views/backend/setup-wizard/convertkit-landing-page-setup/content-start.php
index 8bd3c728e..a88841530 100644
--- a/views/backend/setup-wizard/convertkit-landing-page-setup/content-start.php
+++ b/views/backend/setup-wizard/convertkit-landing-page-setup/content-start.php
@@ -16,9 +16,11 @@
 </p>
 
 <?php
-// If no Landing Pages exist on the ConvertKit account, show the user how to add a Landing Page to ConvertKit,
-// with an option to refresh this page so that they can then select the Landing Page.
-if ( ! $this->landing_pages->exist() ) {
+// If no non-legacy Landing Pages exist on the Kit account, show the user how to add
+// one, with an option to refresh this page so that they can then select it. Legacy
+// landing pages are intentionally excluded here; the wizard only offers v4 pages
+// for new selections.
+if ( ! $this->landing_pages->non_legacy_exist() ) {
 	?>
 	<p>
 		<?php
@@ -47,16 +49,10 @@
 		<label for="landing_page"><?php esc_html_e( 'Which landing page would you like to display?', 'convertkit' ); ?></label>
 		<select name="landing_page" id="landing_page" class="convertkit-select2 widefat">
 			<?php
-			foreach ( $this->landing_pages->get() as $landing_page ) {
-				if ( isset( $convertkit_landing_page['url'] ) ) {
-					?>
-					<option value="<?php echo esc_attr( $landing_page['url'] ); ?>"><?php echo esc_attr( $landing_page['name'] ); ?></option>
-					<?php
-				} else {
-					?>
-					<option value="<?php echo esc_attr( $landing_page['id'] ); ?>"><?php echo esc_attr( $landing_page['name'] ); ?></option>
-					<?php
-				}
+			foreach ( $this->landing_pages->get_non_legacy() as $landing_page ) {
+				?>
+				<option value="<?php echo esc_attr( $landing_page['id'] ); ?>"><?php echo esc_attr( $landing_page['name'] ); ?></option>
+				<?php
 			}
 			?>
 		</select>