Hi,
I don't think that you are editing the right entry.
It is possible that you don't have any menu for product listing so, you are using the default hikashop listing.
The option in the in the HikaShop options, tab "display", section "Default parameters for products", option "Ordering field".
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.