After saving a discount with vouchers, you can export the list of voucher to either Excel or .CSV files.
To export discount vouchers
From the Manage Discounts page (Marketing > Offers > Discounts), click the name of the discount with the vouchers.
On the General tab, under Vouchers, click Excel Export or Csv Export.
Important: You can see the export options only if the Vouchers with random numbers option is selected.