public function removeOrderIncrementPrefix($incrementId)
    {
        $stores = $this->_getAllStores();
        foreach ($stores as $store) {
            $prefix = $this->_coreHelper->getConfigModel($store->getId())->clientOrderIdPrefix;
            // if the configured prefix matches the start of the increment id, strip
            // off the prefix from the increment
            if (strpos($incrementId, $prefix) === 0) {
                return substr($incrementId, strlen($prefix));
            }
        }
        // must return a string
        return (string) $incrementId;
    }