OMG YES. I forgot but this has happened. You can’t load them again because they are still there. I spent my whole last trip only seeing the tickets in my account 70% of the time. Such a pain! Stupid Disney IT! The only way around it was to use someone else’s
Disneyland account & load tickets into that one. If you’re solo create a 2nd Disneyland account with a new email address & load the tickets onto that one. When acct #2 fails to work right switch back to #1. Even though tickets would randomly disappear from my account after we purchased MP on a working account I could book MPs.