title: TFS 2012 upgrade to TFS 2015: Database sync from TFS 2012 to TFS 2015
body: <p>I am upgrading TFS 2012 to TFS 2015 in a new hardware with a new configuration. 
  My strategy is to copy the DB and upgrade them and after sometime switch over to the new TFS 2015.</p>
  
  <p>There will be some time between the actual switch over of the TFS from 2012 to 2015, (in my case it will be days). This approach is taken because we cannot have production downtime of the TFS.</p>
  
  <p>Now the time (days) taken, there will be lot of new data inserted in the old TFS 2012 database. How will I migrate the new additional data to the new TFS 2015?</p>
  
  <p>I am having the question because TFS 2015 versus the TFS 2012 there are table changes, this will be taken care by TFS upgrade. But if I want to insert TFS 2012 data to TFS 2015 will there be any issues? 
  or is there a better approach to the upgrade?</p>