I appreciate your reply. Thank you.
Honestly, it works smoothly but it creates TWO separate folders, so the cloub version is not a mirrow anymore of the local one. For example, you have one folder "C:" and other "C$".

However, I am a bit concerned when you mentioned that "the new data format that will put everything into archives and there will be no such structure in the cloud (and it's not clear what's gonna be with Simple mode)." . In my case, it is very important for the backup to have the same folder structure as the local file system. If Cloudberry cannot offer that in the future I will not be able to use it anymore.