[ovirt-users] Incremental backup in Ovirt 4.5.7-el9 and 4.5.6 -el8 not working...

Hi All, We are trying out ovirt (self-hosted engine) to replace Vmware and it's important to test the Incremental backup but so far we had no luck to make it work. Full backup working fine but subsequent incrementals are not happening, instead it's doing full backup. Using REST api but we can't enable incremental on disk ( DiskBackupMode enum). Any tips and help appreciated..... thanks, rvks