Hi, I'm new into Cyberduck, was mostly using s3 tools to integrate with my object storage point.
Have a client that uses this client to integrate with the swift protocol (keystone 3).
Noticed that when uploading a large object there is a   .file-segments  folder for holding the segments of the object.
But, when overwriting the same object, there is a 
DELETE bulk-delete=1  coming in after uploading the segments again and it removes the  .file-segments  folder, which makes the object not usable (only the manifest object stays intact, and all the actual data is gone).
Found in Cyberduck 8.5.6 (39394).
Thanks for the support!