Cloudberry for Windows New Backup Format and Hybrid That explanation you posted is for image backups. Again, your example in the previous post is not a thing you can do. You can't run a legacy full backup that backs up every single file at any point. That function does not exist. The only time every file is backed up is the very first time you back up on a new plan. After that, only changed and new files are backed up. Whether those changed files are backed up in full or whether only the changes within those files are backed up depends on whether or not the block level backup option is selected and the size of the file - because small files will probably just be backed up in their entirety every time regardless. Any of the files that are backed up using block level will only be backed up in full again according to your full backup schedule. But just to reiterate, and to be clear, when the full backup runs only files that are new and changed are backed up and they are backed up in their entirety. Any files that are unchanged are not backed up.
As far as I'm aware you would need to create a new plan to transition to the new backup format and that would create a new backup set using the new format. Block level backup does not exist in the new format because we perform client side deduplication automatically and that effectively replaces the block level backup option.