Using GSP from V13 in V14

We are upgrading the site of a client from version 13 to 14, but they already subscribed to a GST supplier in the current site (version 13) in January 2023 for one year. Is there any way to integrate the previous GST supplier into version 14 of the site and access features like e-invoicing without having to create an India Compliance account? Or is there any other solution that won’t cost the client extra money on this?