diff --git a/vendor/magento/module-catalog-rule-staging/view/adminhtml/ui_component/catalogrulestaging_update_form.xml b/vendor/magento/module-catalog-rule-staging/view/adminhtml/ui_component/catalogrulestaging_update_form.xml
index 2c1c79cf1a93..d932c171602a 100644
--- a/vendor/magento/module-catalog-rule-staging/view/adminhtml/ui_component/catalogrulestaging_update_form.xml
+++ b/vendor/magento/module-catalog-rule-staging/view/adminhtml/ui_component/catalogrulestaging_update_form.xml
@@ -168,7 +168,7 @@
                     </imports>
                 </settings>
             </field>
-            <field name="staging_save_start_date" formElement="date">
+            <field name="staging_save_start_date" class="Magento\Staging\Block\Adminhtml\Update\Entity\Create\StartTime" formElement="date">
                 <argument name="data" xsi:type="array">
                     <item name="config" xsi:type="array">
                         <item name="source" xsi:type="string">staging</item>
diff --git a/vendor/magento/module-sales-rule-staging/view/adminhtml/ui_component/salesrulestaging_update_form.xml b/vendor/magento/module-sales-rule-staging/view/adminhtml/ui_component/salesrulestaging_update_form.xml
index a04557a9e75b..8cb5ddbbb94d 100644
--- a/vendor/magento/module-sales-rule-staging/view/adminhtml/ui_component/salesrulestaging_update_form.xml
+++ b/vendor/magento/module-sales-rule-staging/view/adminhtml/ui_component/salesrulestaging_update_form.xml
@@ -168,7 +168,7 @@
                     </imports>
                 </settings>
             </field>
-            <field name="staging_save_start_date" formElement="date">
+            <field name="staging_save_start_date" class="Magento\Staging\Block\Adminhtml\Update\Entity\Create\StartTime" formElement="date">
                 <argument name="data" xsi:type="array">
                     <item name="config" xsi:type="array">
                         <item name="source" xsi:type="string">staging</item>
diff --git a/vendor/magento/module-staging/Block/Adminhtml/Update/Entity/Create/StartTime.php b/vendor/magento/module-staging/Block/Adminhtml/Update/Entity/Create/StartTime.php
new file mode 100644
index 000000000000..118a1e8341f0
--- /dev/null
+++ b/vendor/magento/module-staging/Block/Adminhtml/Update/Entity/Create/StartTime.php
@@ -0,0 +1,55 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\Staging\Block\Adminhtml\Update\Entity\Create;
+
+use Magento\Framework\View\Element\UiComponent\ContextInterface;
+use Magento\Framework\View\Element\UiComponentFactory;
+use Magento\Ui\Component\Form\Field;
+use Magento\Staging\Api\UpdateRepositoryInterface;
+use Magento\Staging\Model\VersionHistoryInterface;
+
+/**
+ * Class for start time field
+ */
+class StartTime extends Field
+{
+    /**
+     * @var VersionHistoryInterface
+     */
+    private $versionHistory;
+
+    /**
+     * @param ContextInterface $context
+     * @param UiComponentFactory $uiComponentFactory
+     * @param VersionHistoryInterface $versionHistory
+     * @param array $components
+     * @param array $data
+     */
+    public function __construct(
+        ContextInterface $context,
+        UiComponentFactory $uiComponentFactory,
+        VersionHistoryInterface $versionHistory,
+        array $components = [],
+        array $data = []
+    ) {
+        parent::__construct($context, $uiComponentFactory, $components, $data);
+        $this->versionHistory = $versionHistory;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function prepare()
+    {
+        parent::prepare();
+        $updateId = $this->getContext()->getRequestParam('update_id', null);
+        if ($updateId && $updateId <= $this->versionHistory->getCurrentId()) {
+            $data = $this->getData();
+            $data['config']['disabled'] = 1;
+            $this->setData($data);
+        }
+    }
+}
diff --git a/vendor/magento/module-staging/Model/Entity/Update/Action/Save/SaveAction.php b/vendor/magento/module-staging/Model/Entity/Update/Action/Save/SaveAction.php
index 60aeb741f055..2dc9cd76fcd2 100644
--- a/vendor/magento/module-staging/Model/Entity/Update/Action/Save/SaveAction.php
+++ b/vendor/magento/module-staging/Model/Entity/Update/Action/Save/SaveAction.php
@@ -75,7 +75,6 @@ class SaveAction implements ActionInterface
      * @param UpdateRepositoryInterface|null $updateRepository
      * @param MetadataPool|null $metadataPool
      * @param UpdateFactory|null $updateFactory
-     * @param UpdateFactory|null $updateFactory
      * @param UpdateValidator|null $validator
      */
     public function __construct(
@@ -103,8 +102,10 @@ public function __construct(
     }

     /**
-     * {@inheritdoc}
+     * @inheritdoc
+     *
      * @param array $params
+     *
      * @return bool
      * @throws LocalizedException
      */
@@ -188,13 +189,11 @@ private function editUpdate(array $stagingData)
         $dataStart = strtotime($stagingData['start_time']);
         $updateStart = strtotime($update->getStartTime());

+        $this->validator->validateUpdateStarted($update, $stagingData);
         if ($dataStart != $updateStart) {
             unset($stagingData['update_id']);
             return $this->createUpdate($stagingData);
         }
-
-        $this->validator->validateUpdateStarted($update, $stagingData);
-
         $hydrator = $this->metadataPool->getHydrator(UpdateInterface::class);
         $hydrator->hydrate($update, $stagingData);
         $this->updateRepository->save($update);
diff --git a/vendor/magento/module-staging/Model/Update/UpdateValidator.php b/vendor/magento/module-staging/Model/Update/UpdateValidator.php
index 3be0dab0ba01..66add0f097e8 100644
--- a/vendor/magento/module-staging/Model/Update/UpdateValidator.php
+++ b/vendor/magento/module-staging/Model/Update/UpdateValidator.php
@@ -43,14 +43,12 @@ public function validateUpdateStarted(UpdateInterface $update, array $stagingDat
     {
         /** @var \DateTime $currentDateTime */
         $currentDateTime = new \DateTime();
+        $startTime = strtotime($stagingData['start_time']);
+        $updateStartTime = $update->getStartTime() ? strtotime($update->getStartTime()) : 0;

-        if ((strtotime($stagingData['start_time']) < $currentDateTime->getTimestamp())
-            && (strtotime($update->getStartTime()) !== strtotime($stagingData['start_time']))
-        ) {
+        if ($updateStartTime < $currentDateTime->getTimestamp() && $updateStartTime !== $startTime) {
             throw new LocalizedException(
-                __(
-                    "The Start Time of this Update cannot be changed. It's been already started."
-                )
+                __("The Start Time of this Update cannot be changed. It's been already started.")
             );
         }
     }