Yes, but only to the customer's digital wallet from the order page. On the order page the Custom Charge table has a Refund link per charge (once the order is paid); clicking it always credits that charge's value to the customer's digital balance and marks the line refunded — the confirmation popup only offers Digital Wallet as a refund method for this kind of line-item refund. If you use the sidebar's full-order refund button instead, every custom charge on the order is marked refunded too (again to the digital wallet). To refund a card instead of the wallet, open the order's Stripe payment (the Payment ID link / Refunds sidebar button, which goes to /admin/stripe/payments/{id}) and issue the refund there, where you can choose Digital Wallet or Stripe and enter a custom amount.