Describe the bug
Awesome job on the script!

The issue is as follows, when you import another distro in the same folder wsl --import will fail and report:

...
The supplied install location is already in use.

This is after the distro is already unregistered.

Please add terminal output if possible:

Move Debian to "C:\..\backup"? (Y|n): y
Exporting VHDX to 

Step 1

Create and publish a cross-platform command to add a key to ~/.ssh/authorized_keys, and set the permissions properly if they are incorrect.

ssh-authorize single-key.pub

# add multiple keys
ssh-authorize https://coolaj86.com/authorized_keys

Bonus: check that the keys aren't already added.

This would be a great project to write in Rust - especia