Importing VirtualBox Virtual Machine File in Parallels Desktop

If you have HDD (Parallels Hard Disk) file type,
Convert HDD to VDI:

1. VirtualBox > Virtual Media Manager > Hard disks > *.hdd > Copy > Hard disk file type > VDI (VirtualBox Disk Image)

Steps for Migrating Virtual Machine from VirtualBox to Parallels:

1. Open the virtual machine and shutdown properly.
2. Clone virtual machine in Oracle VM VirtualBox Manager.
3. Open the cloned virtual machine.
4. Run Oracle VM VirtualBox Guest Additions 5.0.20 Uninstall.
5. Shutdown the cloned virtual machine properly.
6. In Parallels Desktop, Open the *.vbox