Questions about Incremental cPanel backups

Hello, 1) I configured incremental backups in v90, but I can't see the full backup in /backups, only a set of tree with the dates, but its like there are not really incrementals. it is ok ? I just see incremental backups folders with the date of each one. Need I create a full backup first and then change it to incremental ? 2) If I sync the whole /backups with all the incremental tree to blackblaze b2 (using the bb2 api or so cause cpanel do not support it), will I be able to rstore the accoutns in a new server in case of a disaster ? Can I just download all the tree structure from bb2 to a new empty cPanel server and use cPanel Backup Restore tools to restore all the accounts ?