I found that the conversion from OVA to VMX failed.
Warning:
- The specified operating system identifier 'Debian_64' (id: 96) is not supported on the selected host. It will be mapped to the following OS identifier: 'Other (32-bit)'.
Error: OVF Package is not supported by target:
- Line 29: Unsupported hardware family 'virtualbox-2.2'.
Completed with errors
So What I did was convert OVA to OVF first. This allowed me to edit the ovf file. You could take it a step further and convert the ovf to vmx but really no need.
Fix the SHA with get-filehash * -Algorithm sha256
Edit mf file
Once done convert back to OVA