Thank you for your question. If you submitted the listing to us manually but you no longer see a 'Refresh' button associated with the listing on the My Listings page of your account, I'm afraid you will have to reenter it at http://www.trulia.com/submit_listings/. If you do see that 'Refresh' button however, you can click that and the listing information should be live on Trulia again within 36 hours.
I hope this helps you. Please let us know if you have any further questions.