[ovirt-users] How to restore Storage Domain from disaster recovery

My engine drop dead so had to create a new one and I'm trying to recover virtual drives from previous engine. I'm using next instructions to import storage domain https://www.ovirt.org/develop/release-management/features/storage/imports... but in order to do it well need to unattach storage domain from previous engine which that is not possible right now since the engine has died. Anyway discarting requirements I got the following warning message: This operation might be unrecoverable and destructive! Storage Domain(s) are already attached to a Data Center. Aproving this operation might cause data corruption if both Data Centers are Active. Do you have an idea how to deactivate a Storage domain without ovirt-engine? Is there any chance to export virtual drives as backups without engine? Thanks in advance.