There is no import script anymore in the latest version of meza. Instead users should do sudo meza deploy monolith --overwrite
with the appropriate backup files in place. Unfortunately this is not documented well in meza yet. This gist is intended as temporary documentation. It would be great if someone created a pull request into meza with this (cleaned up and verified) as official documentation.
There's more than one way this could be done, but this is one way. From the ground up in VirtualBox, get your VM configured. Skip this if you already have a running meza installation.
sudo ifup enp0s3
curl -L getmeza.org > doit
sudo bash doit
sudo meza setup dev-networking