Hi Andrea,
instead of printing a copy to send to your customer have you considered using the Return Email functionality within Linnworks.
Once a return has been received and actioned the system can automatically send an email to the customer which will only contain the items that have been returned.
https://www.linnworks.com/support/emails/email-notifications#Templates
Andrea Dwyer
It would be helpful if we could give customers returns/credit notes if they request them I have set up a "credit note" template for such instances but you can only use this template on a full order - if a customer returns only one item the only way to give them the credit note is create a new order with all their details for just that one item and then use the credit note template. Really we should be able to go into the returns & refunds section, find the return details in the history seciont and be able to right click and have the option to print a specific invoice (i.e the credit note template)