Hello,
You can do this by adding a Formula field in your table. There are 2 options, depending on which record_id you are talking about, either internal Airtable record_id or the one that you see in your table.
Here is a screenshot to demonstrate:
FieldTicket_ID is my table primary key
Field record_id is the formula RECORD_ID() which returns the Airtable internal record_id
Field ticket_id_copy is a formula field refering to the field ticket_id
Fields record_id and ticket_id_copy are available in the merge option of the csv import extension
Regards,
Pascal