@JimWoodhead To upload myfile.csv to defined BigCommerce ftp site and place it in the Sage\outbox\ folder:
coreftp -OA -site BigCommerce -u c:\sage\v4\bigc\export\myfile.csv -p /SAGE/outbox/
Can be scheduled, log files created, retries and timeouts defined and e-mail confirmations sent. All configuration parameters can be defined in Core FTP.