title: Magento: How to import orders from another DataBase
body: <p>I am searching the best method to import old orders from Database (the old website) to magento Database </p>
  
  <p>knowing that: </p>
  
  <p>-Magento-site is functional.</p>
  
  <p>-Many Product exist in the old database but doesn't exist in new magento database.</p>
  
  <p>Please, can you help me know the best method to import these commands?</p>
  
  <p>Thanks. </p>