I believe this may be a bug: Copying from How To Post:
OMG... MY heart has just sunk and I'm trying not to panic.
Basically, the code in the 2.1.2 administrator/components/com_hikashop/classes/user.php file is not mapping user names into community builder.
I have had hundreds (literally) of orders since using 2.1.2 which have come thru and the CB mapping is not working.  This code here:
$fields = array('cbactivation','id','user_id','approved','confirmed');
		$values = array('\'\'',(int)$newUser->user_cms_id,(int)$newUser->user_cms_id,1,1);
		if(!empty($addressData->address_firstname)){
			$fields[]='firstname';
			$values[]=$this->database->Quote($addressData->address_firstname);
		}
		if(!empty($addressData->address_middle_name)){
			$fields[]='middlename';
			$values[]=$this->database->Quote($addressData->address_middle_name);
		}
		if(!empty($addressData->address_lastname)){
			$fields[]='lastname';
			$values[]=$this->database->Quote($addressData->address_lastname);
		}	Any way to fix this retroactively?  Also needs to work going forward.  Please advise.