The import wizard, in four steps: 1. Choose where the data comes from, 2. Loading the dump, 3. Decide what each item sold becomes and 4. Importing, followed by Previous imports with each run's Kind, Status, when it Started, its Report, and Continue or Undo this import. Chapter 7, Importing From Another Subscription System explains every step. Opening the page first deletes what earlier imports left unfinished for 24 hours (see the section called “Where the Old Data Is Kept, and When It Is Deleted”).