Having difficulty importing VM (Parallels)

[ballo]

I've given up on Parallels (host-only networking is completely broken and they show zero interest in fixing it) so I'm trying UTM again hoping it is less buggy than a year ago. Basically, I'm trying to import a Parallels image.

This is what I tried:
qemu-img convert -f parallels /path/to/oldParallels.pvm/oldParallels-0.hdd/Kali-0.hdd.0.{UUID}.hds raw.img
qemu-img info raw.img shows:
file format: raw
virtual size: 64 GiB (68719476736 bytes)
etc.

So far, so good.

I create a VM in UTM and add a VirtIO drive using "Import..." and select the raw.img file. It imports the drive. Looking good. I also delete all the other drives.

(as an aside, the converted drive was the full 64gb but the imported drive shrank back down to the used space. If there is a way to avoid creating a 64gb file in this process, I would like to know)

I try to boot it. It won't boot. It just dumps me into the UEFI shell. If I exit that it dumps me into the BIOS config. It's all greek to me at this point. There is no error message anywhere for me to go on.