diff --git a/assets/js/blocks/product-categories/index.js b/assets/js/blocks/product-categories/index.js
index 865a3658c76..87add60886b 100644
--- a/assets/js/blocks/product-categories/index.js
+++ b/assets/js/blocks/product-categories/index.js
@@ -2,7 +2,7 @@
  * External dependencies
  */
 import { __ } from '@wordpress/i18n';
-import { registerBlockType } from '@wordpress/blocks';
+import { createBlock, registerBlockType } from '@wordpress/blocks';
 import { Icon, list } from '@woocommerce/icons';
 
 /**
@@ -83,6 +83,26 @@ registerBlockType( 'woocommerce/product-categories', {
 		},
 	},
 
+	transforms: {
+		from: [
+			{
+				type: 'block',
+				blocks: [ 'core/legacy-widget' ],
+				// We can't transform if raw instance isn't shown in the REST API.
+				isMatch: ( { idBase, instance } ) =>
+					idBase === 'woocommerce_product_categories' &&
+					!! instance?.raw,
+				transform: ( { instance } ) =>
+					createBlock( 'woocommerce/product-categories', {
+						hasCount: !! instance.raw.count,
+						hasEmpty: ! instance.raw.hide_empty,
+						isDropdown: !! instance.raw.dropdown,
+						isHierarchical: !! instance.raw.hierarchical,
+					} ),
+			},
+		],
+	},
+
 	deprecated: [
 		{
 			// Deprecate HTML save method in favor of dynamic rendering.
diff --git a/assets/js/blocks/product-search/index.js b/assets/js/blocks/product-search/index.js
index 7bb7a132e59..656e85220e1 100644
--- a/assets/js/blocks/product-search/index.js
+++ b/assets/js/blocks/product-search/index.js
@@ -2,7 +2,7 @@
  * External dependencies
  */
 import { __ } from '@wordpress/i18n';
-import { registerBlockType } from '@wordpress/blocks';
+import { createBlock, registerBlockType } from '@wordpress/blocks';
 import { Icon, search } from '@woocommerce/icons';
 /**
  * Internal dependencies
@@ -71,6 +71,25 @@ registerBlockType( 'woocommerce/product-search', {
 		},
 	},
 
+	transforms: {
+		from: [
+			{
+				type: 'block',
+				blocks: [ 'core/legacy-widget' ],
+				// We can't transform if raw instance isn't shown in the REST API.
+				isMatch: ( { idBase, instance } ) =>
+					idBase === 'woocommerce_product_search' && !! instance?.raw,
+				transform: ( { instance } ) =>
+					createBlock( 'woocommerce/product-search', {
+						label:
+							instance.raw.title === ''
+								? __( 'Search', 'woo-gutenberg-products-block' )
+								: instance.raw.title,
+					} ),
+			},
+		],
+	},
+
 	edit,
 
 	/**
diff --git a/assets/js/blocks/reviews/all-reviews/index.js b/assets/js/blocks/reviews/all-reviews/index.js
index 2700ce0ffc3..270ab01eca4 100644
--- a/assets/js/blocks/reviews/all-reviews/index.js
+++ b/assets/js/blocks/reviews/all-reviews/index.js
@@ -2,7 +2,7 @@
  * External dependencies
  */
 import { __ } from '@wordpress/i18n';
-import { registerBlockType } from '@wordpress/blocks';
+import { createBlock, registerBlockType } from '@wordpress/blocks';
 import { Icon, discussion } from '@woocommerce/icons';
 
 /**
@@ -51,6 +51,27 @@ registerBlockType( 'woocommerce/all-reviews', {
 		},
 	},
 
+	transforms: {
+		from: [
+			{
+				type: 'block',
+				blocks: [ 'core/legacy-widget' ],
+				// We can't transform if raw instance isn't shown in the REST API.
+				isMatch: ( { idBase, instance } ) =>
+					idBase === 'woocommerce_recent_reviews' && !! instance?.raw,
+				transform: ( { instance } ) =>
+					createBlock( 'woocommerce/all-reviews', {
+						reviewsOnPageLoad: instance.raw.number,
+						imageType: 'product',
+						showLoadMore: false,
+						showOrderby: false,
+						showReviewDate: false,
+						showReviewContent: false,
+					} ),
+			},
+		],
+	},
+
 	/**
 	 * Renders and manages the block.
 	 *