diff --git a/core/modules/migrate_drupal_ui/src/Tests/MigrateUpgradeTestBase.php b/core/modules/migrate_drupal_ui/src/Tests/MigrateUpgradeTestBase.php
index 3846bd8..2af4cb6 100644
--- a/core/modules/migrate_drupal_ui/src/Tests/MigrateUpgradeTestBase.php
+++ b/core/modules/migrate_drupal_ui/src/Tests/MigrateUpgradeTestBase.php
@@ -119,7 +119,7 @@ protected function tearDown() {
   public function testMigrateUpgrade() {
     $connection_options = $this->sourceDatabase->getConnectionOptions();
     $this->drupalGet('/upgrade');
-    $this->assertText('Upgrade a site by importing it into a clean and empty new install of Drupal 8. You will lose any existing configuration once you import your site into it. See the online documentation for Drupal site upgrades for more detailed information.');
+    $this->assertText('Upgrade a site by importing its database and files into a clean and empty new install of Drupal 8. See the Drupal site upgrades handbook for more information.');
 
     $this->drupalPostForm(NULL, [], t('Continue'));
     $this->assertText('Provide credentials for the database of the Drupal site you want to upgrade.');
@@ -160,7 +160,7 @@ public function testMigrateUpgrade() {
 
     // Restart the upgrade process.
     $this->drupalGet('/upgrade');
-    $this->assertText('Upgrade a site by importing it into a clean and empty new install of Drupal 8. You will lose any existing configuration once you import your site into it. See the online documentation for Drupal site upgrades for more detailed information.');
+    $this->assertText('Upgrade a site by importing its database and files into a clean and empty new install of Drupal 8. See the Drupal site upgrades handbook for more information.');
 
     $this->drupalPostForm(NULL, [], t('Continue'));
     $this->assertText('Provide credentials for the database of the Drupal site you want to upgrade.');
diff --git a/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeTestBase.php b/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeTestBase.php
index 50d8e9d..e584027 100644
--- a/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeTestBase.php
+++ b/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeTestBase.php
@@ -114,7 +114,7 @@ protected function tearDown() {
   public function testMigrateUpgrade() {
     $connection_options = $this->sourceDatabase->getConnectionOptions();
     $this->drupalGet('/upgrade');
-    $this->assertText('Upgrade a site by importing it into a clean and empty new install of Drupal 8. You will lose any existing configuration once you import your site into it. See the online documentation for Drupal site upgrades for more detailed information.');
+    $this->assertSession()->responseContains('Upgrade a site by importing its database and files into a clean and empty new install of Drupal 8. See the Drupal site upgrades handbook for more information.');
 
     $this->drupalPostForm(NULL, [], t('Continue'));
     $this->assertText('Provide credentials for the database of the Drupal site you want to upgrade.');
@@ -158,7 +158,7 @@ public function testMigrateUpgrade() {
 
     // Restart the upgrade process.
     $this->drupalGet('/upgrade');
-    $this->assertSession()->pageTextContains('Upgrade a site by importing it into a clean and empty new install of Drupal 8. You will lose any existing configuration once you import your site into it. See the online documentation for Drupal site upgrades for more detailed information.');
+    $this->assertSession()->responseContains('Upgrade a site by importing its database and files into a clean and empty new install of Drupal 8. See the Drupal site upgrades handbook for more information.');
 
     $this->drupalPostForm(NULL, [], t('Continue'));
     $this->assertSession()->pageTextContains('Provide credentials for the database of the Drupal site you want to upgrade.');