Moving from macOS based Plex Media Server to freenas and running into trouble

I followed the steps as described in what seems to be the official Plex guide (https://support.plex.tv/articles/201370363-move-an-install-to-another-system/) but when I get to the step of “Launch Plex Web App
Open your Plex Web App and you should see your libraries, though your content is unlikely to work yet.” I don’t see any of my libraries there. Something is missing somewhere. Is there a newer guide that I should be using somewhere else? Thanks!

Did you mount the directories containing your media to your plex jail?

Yes, and it treats them just like new media is added, as though nothing was migrated.

Did you move your old database and metadata over to /usr/local/plexdata/Plex Media Server/

The above assumes an install into a standard jail not the plugin.