It is Ghost Update. When an agent starts processing your application, they update it on their database which sometimes reflects on your account. For example, when they review your application and attach notes to it, your account will get a ghost update. You will not be able to see those notes but it reflects that your application is being processed. If you wish to keep a track of their notes on your application, you can apply for GCMS notes in which you will get a detailed tracking of your application.