Resolved J2Commerce import for app "Add to Usergroup"

Hi,
I am importing J2commerce products with this app:
https://docs.j2commerce.com/apps/add-to-user-group/

Can I import the Usergroups for the products?
The value is saved in the params in the table __j2store_variants

i.e.

{"product_css_class":"","usergroup":{"user_group":["16"]}}

Thanks
Sigrid