diff --git a/typo3/sysext/extbase/Classes/Persistence/Generic/Backend.php b/typo3/sysext/extbase/Classes/Persistence/Generic/Backend.php
index e7cba2f..cd81e02 100644
--- a/typo3/sysext/extbase/Classes/Persistence/Generic/Backend.php
+++ b/typo3/sysext/extbase/Classes/Persistence/Generic/Backend.php
@@ -406,6 +406,7 @@ class Backend implements \TYPO3\CMS\Extbase\Persistence\Generic\BackendInterface
                     if ($propertyValue->_isNew()) {
                         $this->insertObject($propertyValue, $object, $propertyName);
                     }
+
                     // Check explicitly for NULL, as getPlainValue would convert this to 'NULL'
                     $row[$columnMap->getColumnName()] = $propertyValue !== null
                         ? $this->dataMapper->getPlainValue($propertyValue)
@@ -414,6 +415,14 @@ class Backend implements \TYPO3\CMS\Extbase\Persistence\Generic\BackendInterface
                 $queue[] = $propertyValue;
             } elseif ($object->_isNew() || $object->_isDirty($propertyName)) {
                 $row[$columnMap->getColumnName()] = $this->dataMapper->getPlainValue($propertyValue, $columnMap);
+
+                $className = get_class($object);
+                $propertyMetaData = $this->reflectionService->getClassSchema($className)->getProperty($propertyName);
+                $cleanProperty = $object->_getCleanProperty($propertyName);
+
+                if ($propertyValue === null && $cleanProperty instanceof \TYPO3\CMS\Extbase\DomainObject\DomainObjectInterface && $propertyMetaData['cascade'] === 'remove') {
+                    $this->removeEntity($cleanProperty);
+                }
             }
         }
         if (!empty($row)) {