I have two February itineraries that have been showing this message for about a month now. I can see the changes, and I am okay with them. I went ahead and sent a message to Twitter telling them that I am okay with the changes. I did not realize that there could be issues with my seat assignment or checking in as we got closer to the day. Hopefully they can clear the error message and I won't have any issues. I agree with many of the post above; it's sad that there's not a way to simply confirm the change without having to talk to an agent.