In the earlier flow WPML used to duplicate the main product and create a translated duplicate copy of that product. We have also implemented that same flow for vendors.
But now they have changed their flow where they are not creating a duplicate but just creating a translated version without duplicating the product.
So we also need to modify our flow and implement the same for vendors. But not to worry our dev team is getting touch with the WPML team for this.
Kindly provide us some time to implement support for the new flow of WPML for vendors.