Sync existing Woocommerce bookings with fresh google calendar

I have Woocommerce bookings plugin up and running, including existing sales (completed and uncompleted). When I create Google Calendar it only lists the new bookings as from the moment I connected Google Calendar. I need the existing (+400) bookings in WooCommerce to be integrated in the new Google Calendar. Is there a plugin that synchronises both ways new/existing-old bookings ?