Weird behavior with `lerna link convert`

We tried using the lerna link convert command, which apparently puts links in the root (workspace) package.json:

{
  "name": "root",
  "private": true,
  "devDependencies": {
    ...
  },
  "workspaces": [
    "src/*"
  ],
  "dependencies": {
    "@scope/pkg-a": "file:src/pkg-a",
    "@scope/pkg-b": "file:src/pkg-b"
  }
}

When beachball publish runs, it adds a changelog entry for the root package:

{
  "name": "root",
  "entries": [
    {
      "date": "Fri, 25 Jun 2021 14:04:42 GMT",
      "tag": "root_vundefined",
      "comments": {
        "none": [
          {
            "comment": "Bump root to vundefined",
            "author": "...",
            "commit": "...",
            "package": "root"
          }
        ]
      }
    }
  ]
}

Just FYI if others may encounter the same issue. We removed the root deps on the monorepo packages (the file: links). I don't know much about lerna link convert, but ideally beachball would detect this configuration and ignore the root package?

Start by tracing how beachball publish discovers packages and creates changelog entries when the workspace root has file: links to monorepo packages. Reproduce the configuration from the issue, then verify that publishing no longer creates a root entry with an undefined version while normal package changelogs still work.