Hello,
HikaMarket is using the HikaShop product class in order to update/save the product.
The HikaShop product class loads all HikaShop plugins before calling the product trigger.
But since HikaShop 4.3.0, there was a modification in the behavior which should be handled by HikaMarket.
It results that the product categories are modified by the massaction but edited just after that by the production edition (which updates the categories, images, variants.. after the main content of the product is saved).
We worked on a hotfix for HikaMarket 4.1.1.
Please re-download it.
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.