Export OVA to Proxmox

Upload .ova file to proxmox server

root@pve:/Mirror1/csr/backups/OVAs# tar -xvf SMGR-10.2.0.0.439670-e70-46E.ova
SMGR-10.2.0.0.439670-e70-46E.ovf
SMGR-10.2.0.0.439670-e70-46E.mf
SMGR-10.2.0.0.439670-e70-46E.cert
SMGR-10.2.0.0.439670-e70-46E-disk1.vmdk

Run the import tool

qm importovf 1001 SMGR-10.2.0.0.439670-e70-46E.ovf backups --format raw

Importovf tool where 1001 is the VM number backups is the destination of the drive in raw format.

Sometimes you need to modify the BIOS to UEFI in order to boot, if VM is stuck at booting from disk change to UEFI