public function moveFlexFormDataToConf()
    {
        // don't move this to init
        $this->pi_initPIflexForm();

        $piFlexForm = $this->cObj->data['pi_flexform'];
        if (is_array($piFlexForm['data'])) {
            foreach ($piFlexForm['data'] as $sheetKey => $sheet) {
                foreach ($sheet as $lang) {
                    foreach ($lang as $key => $value) {
                        // delete current conf value from conf-array
                        // when FF-Value differs from TS-Conf and FF-Value is not empty
                        $value = $this->fetchConfigurationValue($key, $sheetKey);
                        if ($this->conf[$key] != $value && !empty($value)) {
                            unset($this->conf[$key]);
                            $this->conf[$key] = $this->fetchConfigurationValue($key, $sheetKey);
                        }
                    }
                }
            }
        }
    }