Google Feed Plug-in remove fields on save

i utilize Google Export to export my feeds on Google Merchant. Yesterday i want add a new field but i encountered an error. When add a new field and save with button, cs-cart remove one or two old fields. Now Google don’t accept my feed because there aren’t all required fields.

From CS-cart i can’t add required field because they are deleted on save. I try to uninstall and reinstall plug-in, wipe cache without resolve the problem. There is a fix?

Try to reproduce the issue on the demo.

Hello! This issue has been already fixed in CS-Cart version 4.15.2.

[!] Add-ons: Data feeds: Adding new fields replaced existing ones. Fixed.

Please try to upgrade your installation to this one version.