[ovirt-users] hosted-engine --deploy --restore-from-file fails with error "Domain format is different from master storage domain format"

Hi there, for two weeks we are trying to move our hosted engine to a glusterfs storage resulting in an error "Domain format is different from master storage domain format". The newly created storage domain has version 5 (default since compatibility level 4.3 according to documentation). Hosted engine version is 4.3.8.2-1.el7 All hosts are updated to the latest versions and are rebooted. Cluster and DataCenter compatibility version is 4.3. Master data domain and all other domains are Format V4 and there is no V5 available in dropdown menus. Even if I try to create a new storage domain from manager there is only V4 available. The system and all hosts where installed march 2019 so it was ovirt release 4.3.2 or 4.3.1 which created the existing domains. Is there a way to update the master storage domain to V5? It seems I cannot downgrade the datacenter to compat 4.2 and then raise it again. After two weeks I'm out of ideas. Can anyone help please? Regards, Marcel