diff --git a/src/NestedSetsBehavior.php b/src/NestedSetsBehavior.php
index a488be1..ea1bdf4 100644
--- a/src/NestedSetsBehavior.php
+++ b/src/NestedSetsBehavior.php
@@ -300,6 +300,10 @@ public function afterUpdate(): void
      *
      * @return bool Whether the operation was successful and the node was appended or moved.
      *
+     * **Note:** This method uses {@see ActiveRecord::save()} internally, which means Yii2 will automatically handle
+     * database transactions if the model {@see ActiveRecord::isTransactional()} method returns `true` for the current
+     * scenario and {@see ActiveRecord::OP_INSERT} or {@see ActiveRecord::OP_UPDATE} operations.
+     *
      * Usage example:
      * ```php
      * $category->appendTo($parentCategory);
@@ -534,24 +538,7 @@ public function deleteWithChildren(): bool|int
     {
         $this->operation = self::OPERATION_DELETE_WITH_CHILDREN;
 
-        if ($this->getOwner()->isTransactional(ActiveRecord::OP_DELETE) !== false) {
-            return $this->deleteWithChildrenInternal();
-        }
-
-        $transaction = $this->getDb()->beginTransaction();
-
-        try {
-            match ($result = $this->deleteWithChildrenInternal()) {
-                false => $transaction->rollBack(),
-                default => $transaction->commit(),
-            };
-
-            return $result;
-        } catch (Exception $e) {
-            $transaction->rollBack();
-
-            throw $e;
-        }
+        return $this->deleteWithChildrenInternal();
     }
 
     /**
@@ -610,6 +597,10 @@ public function events(): array
      *
      * @return bool Whether the operation was successful and the node was inserted or moved.
      *
+     * **Note:** This method uses {@see ActiveRecord::save()} internally, which means Yii2 will automatically handle
+     * database transactions if the model's {@see ActiveRecord::isTransactional()} method returns `true` for the
+     * current scenario and {@see ActiveRecord::OP_INSERT} or {@see ActiveRecord::OP_UPDATE} operations.
+     *
      * Usage example:
      * ```php
      * $category->insertAfter($siblingCategory);
@@ -651,6 +642,10 @@ public function insertAfter(ActiveRecord $node, bool $runValidation = true, arra
      *
      * @return bool Whether the operation was successful and the node was inserted or moved.
      *
+     * **Note:** This method uses {@see ActiveRecord::save()} internally, which means Yii2 will automatically handle
+     * database transactions if the model {@see ActiveRecord::isTransactional()} method returns `true` for the current
+     * scenario and {@see ActiveRecord::OP_INSERT} or {@see ActiveRecord::OP_UPDATE} operations.
+     *
      * Usage example:
      * ```php
      * $category->insertBefore($siblingCategory);
@@ -821,6 +816,10 @@ public function leaves(): ActiveQuery
      *
      * @return bool Whether the operation was successful and the node was created or moved as root.
      *
+     * **Note:** This method uses {@see ActiveRecord::save()} internally, which means Yii2 will automatically handle
+     * database transactions if the model {@see ActiveRecord::isTransactional()} method returns `true` for the current
+     * scenario and {@see ActiveRecord::OP_INSERT} or {@see ActiveRecord::OP_UPDATE} operations.
+     *
      * Usage example:
      * ```php
      * // Create a new root node
@@ -957,6 +956,10 @@ public function parents(int|null $depth = null): ActiveQuery
      *
      * @return bool Whether the operation was successful and the node was prepended or moved.
      *
+     * **Note:** This method uses {@see ActiveRecord::save()} internally, which means Yii2 will automatically handle
+     * database transactions if the model {@see ActiveRecord::isTransactional()} method returns `true` for the current
+     * scenario and {@see ActiveRecord::OP_INSERT} or {@see ActiveRecord::OP_UPDATE} operations.
+     *
      * Usage example:
      * ```php
      * $category->prependTo($parentCategory);
diff --git a/tests/NestedSetsBehaviorTest.php b/tests/NestedSetsBehaviorTest.php
index bb8d3f6..2cf733e 100644
--- a/tests/NestedSetsBehaviorTest.php
+++ b/tests/NestedSetsBehaviorTest.php
@@ -1429,71 +1429,6 @@ public function testThrowLogicExceptionWhenBehaviorIsDetachedFromOwner(): void
         $behavior->parents();
     }
 
-    public function testReturnAffectedRowsAndUpdateTreeAfterDeleteWithChildrenWhenManualTransactionIsUsed(): void
-    {
-        $this->generateFixtureTree();
-
-        $node = Tree::findOne(10);
-
-        self::assertNotNull(
-            $node,
-            "Node with ID '10' should exist before attempting to delete with children using manual transaction.",
-        );
-        self::assertEquals(
-            'Node 2.1',
-            $node->getAttribute('name'),
-            "Node with ID '10' should have the name 'Node 2.1' before deletion.",
-        );
-        self::assertFalse(
-            $node->isTransactional(ActiveRecord::OP_DELETE),
-            "Node with ID '10' should not use transactional delete (manual transaction expected).",
-        );
-
-        $initialCount = (int) Tree::find()->count();
-        $toDeleteCount = (int) Tree::find()
-            ->andWhere(['>=', 'lft', $node->getAttribute('lft')])
-            ->andWhere(['<=', 'rgt', $node->getAttribute('rgt')])
-            ->count();
-
-        self::assertEquals(
-            3,
-            $toDeleteCount,
-            "Node '2.1' should have itself and '2' children (total '3' nodes to delete).",
-        );
-
-        $result = (int) $node->deleteWithChildren();
-
-        self::assertEquals(
-            $toDeleteCount,
-            $result,
-            "'deleteWithChildren()' should return the number of affected rows equal to the nodes deleted.",
-        );
-
-        $finalCount = (int) Tree::find()->count();
-
-        self::assertEquals(
-            $initialCount - $toDeleteCount,
-            $finalCount,
-            'Tree node count after deletion should decrease by the number of deleted nodes.',
-        );
-        self::assertNull(
-            Tree::findOne(10),
-            "Node with ID '10' should not exist after deletion.",
-        );
-        self::assertNull(
-            Tree::findOne(11),
-            "Node with ID '11' should not exist after deletion.",
-        );
-        self::assertNull(
-            Tree::findOne(12),
-            "Node with ID '12' should not exist after deletion.",
-        );
-        self::assertNotNull(
-            Tree::findOne(1),
-            "Root node with ID '1' should still exist after deleting node '10' and its children.",
-        );
-    }
-
     public function testReturnFalseWhenDeleteWithChildrenIsAbortedByBeforeDelete(): void
     {
         $this->createDatabase();
@@ -1529,39 +1464,6 @@ public function testReturnFalseWhenDeleteWithChildrenIsAbortedByBeforeDelete():
         );
     }
 
-    public function testThrowExceptionWhenDeleteWithChildrenThrowsExceptionInTransaction(): void
-    {
-        $this->createDatabase();
-
-        $node = new Tree(['name' => 'Root']);
-
-        $node->detachBehavior('nestedSetsBehavior');
-
-        self::assertNull(
-            $node->getBehavior('nestedSetsBehavior'),
-            'Behavior must be detached before testing exception handling.',
-        );
-
-        $nestedSetsBehavior = $this->createMock(NestedSetsBehavior::class);
-        $nestedSetsBehavior->expects(self::once())
-            ->method('deleteWithChildren')
-            ->willThrowException(new Exception('Simulated database error during deletion'));
-
-        $node->attachBehavior('nestedSetsBehavior', $nestedSetsBehavior);
-        $behavior = $node->getBehavior('nestedSetsBehavior');
-
-        self::assertInstanceOf(
-            NestedSetsBehavior::class,
-            $behavior,
-            'Behavior must be attached to the node before testing exception handling.',
-        );
-
-        $this->expectException(Exception::class);
-        $this->expectExceptionMessage('Simulated database error during deletion');
-
-        $behavior->deleteWithChildren();
-    }
-
     public function testThrowExceptionWhenMakeRootIsCalledOnModelWithoutPrimaryKey(): void
     {
         $this->createDatabase();