Hi,
Can you please check and re-save your product listing menu configuration ?
It is possible that during the migration of the menu, the setting to display badge hasn't been migrate properly.
In HikaShop 2.6.0 ; the module/menu configuration is now stored directly in Joomla (when using Joomla 3).
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.