Were you adding new Titles, or were you adding credits to your filmography?
This is very unusual. However, a number of people who normally log on directly logged on through Facebook instead. They did not realize that this actually creates a new account. Is it possible that you logged on in such a way, and submitted the updates under that account? If so, the submission would be in the history for that account.
Also, if you submitted, you should have received a Receipt email for each submission. If you didn't receive the email, it is possible that you did not actually submit the update.