Just posting to add that this is still a problem as of today, 12/20/2024. Got a snarky email from a client because the invoice went to a previous email address. The client card is correct but if I try to make a new invoice from the project, it shows the correct email address for a second then changes to the old one. I can't review all email address when invoicing each month. It's insane that this thread is from May and this is still an issue.