Deleting the folders before backup is what is currently done. Thanks for your time.

Running Proget 5.2.26 (Build 2) in Docker.

The /var/proget/packages folder is connected via volume to a folder on the host. The folder on the host is on an ext4 filesystem, which is case sensitive. There is a Nuget feed, with a feed connector to chocolatey.org. The disk path is left at default, /var/proget/packages/.nugetv2/F1

When the the GoogleChrome package is pulled to the local cache, there are two folders created in the disk path. Both GoogleChrome with the nupkgs and a empty googlechrome, both in /var/proget/packages/.nugetv2/F1.

This is problematic when trying to backup the packages as the backup does not have case sensitivity, and therefore fails to backup the GoogleChrome folder with the nupkgs.

The empty folder also appears when uploading a new version via the drop path.