title: How to upload only the new items to the server without updating/deleting the existing items using Microsoft Sync Framework
body: <p>I have a data-synchronization scenario where I should upload only the new items to the server without updating/deleting the existing ones and after that download everything from the server.
  I defined two <strong>SyncOrchestrator</strong>s (one for the upload and one for the download) with different scopes. </p>
  
  <p>How can I specify that only the new items, which don't exist on the server, should be uploaded?</p>
  
  <p>Edit:
  <strong><em>Scenario description</em></strong></p>
  
  <p>The client should download everything from the server before going offline. While it is offline it can only create new records. After the client is connected to the network, it should upload the new records and after that download everything from the server.</p>