When using Ouriginal, are documents still scanned towards work handed in in TurnitIn previous years?

The Ouriginal database of content comes from three different sources: the World Wide Web, published materials, and previously submitted student materials. All materials previously submitted to the TU Delft via Turnitin have been submitted to the Ouriginal database and will show in the report as a document with the name €˜TU Delft Backlog'.