@farokh one backup job should leave one snapshot. this is the way. to differentiate from previous backup the data to be put in the delta, it has to refer to this snapshot. delete it and you get a full backup ongoing. if you have two snaps on your VM, either you have a manual one, or you have multiple backup jobs backuping this VM (check the backup tab of the VM ?)

@Pilow Double checked. There's no filter in place and no new VM.

Keep us posted!