Fixed Magento reorder order id issue

app/code/Magento/Sales/Model/AdminOrder/Create.php

@@ -2091,10 +2091,8 @@ public function createOrder()
     private function beforeSubmit(Quote $quote)
     {
         $orderData = [];
-        if ($this->getSession()->getReordered() || $this->getSession()->getOrder()->getId()) {
+        if ($this->getSession()->getOrder()->getId()) {
             $oldOrder = $this->getSession()->getOrder();
-            $oldOrder = $oldOrder->getId() ?
-                $oldOrder : $this->orderRepositoryInterface->get($this->getSession()->getReordered());
             $originalId = $oldOrder->getOriginalIncrementId();
             if (!$originalId) {
                 $originalId = $oldOrder->getIncrementId();
@@ -2121,16 +2119,12 @@ private function beforeSubmit(Quote $quote)
      */
     private function afterSubmit(Order $order)
     {
-        if ($this->getSession()->getReordered() || $this->getSession()->getOrder()->getId()) {
+        if ($this->getSession()->getOrder()->getId()) {
             $oldOrder = $this->getSession()->getOrder();
-            $oldOrder = $oldOrder->getId() ?
-                $oldOrder : $this->orderRepositoryInterface->get($this->getSession()->getReordered());
             $oldOrder->setRelationChildId($order->getId());
             $oldOrder->setRelationChildRealId($order->getIncrementId());
             $oldOrder->save();
-            if ($this->getSession()->getOrder()->getId()) {
-                $this->orderManagement->cancel($oldOrder->getEntityId());
-            }
+            $this->orderManagement->cancel($oldOrder->getEntityId());
             $order->save();
         }
     }

app/code/Magento/Sales/Test/Unit/Model/AdminOrder/CreateTest.php

@@ -164,7 +164,6 @@ protected function setUp(): void
 
         $this->orderMock = $this->getMockBuilder(Order::class)
             ->disableOriginalConstructor()
-            ->addMethods(['setReordered', 'getReordered'])
             ->onlyMethods(
                 [
                     'getEntityId',
@@ -505,8 +504,6 @@ public function testInitFromOrder()
 
         $this->orderMock->method('getItemsCollection')
             ->willReturn($itemCollectionMock);
-        $this->orderMock->method('getReordered')
-            ->willReturn(false);
         $this->orderMock->method('getShippingAddress')
             ->willReturn($address);
         $this->orderMock->method('getBillingAddress')

dev/tests/integration/testsuite/Magento/Sales/Model/AdminOrder/CreateTest.php

@@ -98,7 +98,6 @@ public function testInitFromOrderAndCreateOrderFromQuoteWithAdditionalOptions()
         $order->loadByIncrementId('100000001');
 
         /** @var $orderCreate \Magento\Sales\Model\AdminOrder\Create */
-        $order->setReordered(true);
         $orderCreate = $this->model->initFromOrder($order);
 
         $quoteItems = $orderCreate->getQuote()->getItemsCollection();