This video demo how to manage files at SFTP location using MuleSoft SFTP Connector. This video demo following in detail:
SFTP Connector configuration
On New or Updated SFTP File event source component
Create File at SFTP location
Move File between SFTP location
Write File at SFTP location
How to append file at SFTP location without headers? And keep the headers only one time at the top in the file.