[ovirt-users] Migrating VMs from 4.3 Ovirt Env to new 4.4 Env

So as title states I am moving VMs from an old system of ours with alot of issues to a new 4.4 HC Gluster envr although it seems I am running into what I have learnt is a 4.3 bug of some sort with exporting OVAs. Some of my OVAs are showing large GB sizes although their actual size may be 20K so they are showing no boot device as well, theres really no data there. Some OVAs are fine but some are broken. So I was wondering if anyone has dealt with this and whats the best way around this issue? I have no access remotely at the moment but when I get to them, I read somewhere its better to just detach disks and download them to a HDD for example and build new VMs and upload those disks and attach them instead this way? Please do share if you have any better ways, usually I just Export OVA to an external HDD, remount to new ovirt and import OVA but seems a few of these VMs out of alot did not succeed and I am running out of downtime window. Thanks a bunch, I have noticed repeated names helping me, I am very grateful for your help.