In Connections Cloud communities. create a folder, and add some files.
Then "accidentally" delete the folder. -> there is no listing of a Folder in the Files Trash section so the Client assumes the data is lost.The files are still listed in the FIles section, so the workaround is to create a folder again and manually add in the files that were in the original Folder. This is impractical where a Community has 1,000's of Files...
All files are listed in the Files section, however organizing them into folders doesn't move them from the Files listing, but rather links them to a folder. So deleting a folder doesn't delete the file contents. While this is counter intuitive your data should still be listed in the Files listing.
To rectify this you will simply need to create the Folder again and find the files among the Files listing that were in (linked to) the deleted Folder and add them to the Folder. I understand this is somewhat or a design issue, and can be impractical where an organization may have thousands of files in the Files listing so I have created an enhancement request for this.