I've run into a situation where I would prefer to use dataflow but for some reason when I try to run the sftp file through data flows I get the error, 'an established connection was aborted by the server'.  I know that the connection is working, however because the exact same thing works correctly when using a normal import.  Is there anything going on behind the curtains that could be causing this?  The file is pretty large; perhaps data flows can't handle the large file for some reason?  I'm sending the data to a Salesforce connector; anything between SFTP and Salesforce to consider?  Any thoughts would be much appreciated.  Thanks.