Pimcore\Model\Element\Service::renewReferences PHP Method

    public static function renewReferences($data, $initial = true)
    {
        if (is_array($data)) {
            foreach ($data as &$value) {
                $value = self::renewReferences($value, false);
            }
            return $data;
        } elseif (is_object($data)) {
            if ($data instanceof ElementInterface && !$initial) {
                return self::getElementById(self::getElementType($data), $data->getId());
            } else {
                // if this is the initial element set the correct path and key
                if ($data instanceof ElementInterface && $initial) {
                    $originalElement = self::getElementById(self::getElementType($data), $data->getId());
                    if ($originalElement) {
                        if ($data instanceof Asset) {
                            $data->setFilename($originalElement->getFilename());
                        } elseif ($data instanceof Document) {
                            $data->setKey($originalElement->getKey());
                        } elseif ($data instanceof Object\AbstractObject) {
                            $data->setKey($originalElement->getKey());
                        }
                        if (!Object\AbstractObject::doNotRestoreKeyAndPath()) {
                            $data->setPath($originalElement->getRealPath());
                        }
                    }
                }
                $properties = get_object_vars($data);
                foreach ($properties as $name => $value) {
                    $data->{$name} = self::renewReferences($value, false);
                }
                return $data;
            }
        }
        return $data;
    }

 /**
  * Object
  *
  * @return mixed
  */
 public function loadData()
 {
     $data = null;
     $zipped = false;
     // check both the legacy file path and the new structure
     foreach ([$this->getFilePath(), $this->getLegacyFilePath()] as $path) {
         if (file_exists($path)) {
             $filePath = $path;
             break;
         }
         if (file_exists($path . ".gz")) {
             $filePath = $path . ".gz";
             $zipped = true;
             break;
         }
     }
     if ($zipped && is_file($filePath) && is_readable($filePath)) {
         $data = gzdecode(file_get_contents($filePath));
     } elseif (is_file($filePath) && is_readable($filePath)) {
         $data = file_get_contents($filePath);
     }
     if (!$data) {
         \Logger::err("Version: cannot read version data from file system.");
         $this->delete();
         return;
     }
     if ($this->getSerialized()) {
         $data = Serialize::unserialize($data);
     }
     if ($data instanceof Asset && file_exists($this->getBinaryFilePath())) {
         $binaryHandle = fopen($this->getBinaryFilePath(), "r+");
         $data->setStream($binaryHandle);
     } elseif ($data instanceof Asset && $data->data) {
         // this is for backward compatibility
         $data->setData($data->data);
     }
     $data = Element\Service::renewReferences($data);
     $this->setData($data);
     return $data;
 }