If the goal is to retrieve the file from Server A, process it on Server B and then move them to Server C... Use ListSFTP to retrieve the file list from Server A Use FetchSFTP to retrieve the file  from Server A and copy it into a flowfile on Server B.  In the processor Properties, set Property Completion Strategy to "Delete File".  That will remove the file from Server A after it is successfully turned into a flowfile. Use PutSFTP to copy the flowfiles out to a file on Server C   I think that accomplishes what you want and the file is still in NiFi on Server B for whatever additional processing is needed. ... View more