https://help.annke.com/hc/en-us/community/posts/38301057371033-1-888-829-1467-What-is-United-s-Airlines-refund-policy-faq
Check the UpDated Ticket: Once the Date change has been processed, double-check your upDated ticket to ensure that the correct Date is reflected. It's important to verify that there are no errors in the upDated information.
