Cannot clear override field - 1.4.4

I cannot clear the override field in the edit language dialog. It's possible to leave one character or line, but saving an empty override field (or filled with a single space) makes HikaShop reset the field to it's former state.

You can replace the line:
if(!empty($content_override)){
by:
if(true){

in the file administrator/components/com_hikashop/controllers/config.php to fix that. We'll add that to next version.