Windows platform ignores some build options

When we run packaging, we put values in the build.json file like this:

{
  "windows": {
    "release": {
      "packageCertificateKeyFile": "res\\native\\windows\\CordovaApp.pfx",
      "publisherId": "CN=995C8641-FD13-454D-B93F-C1E4381956B9"
    }
  }
}

After the packaging, the appxmanifest file has this in it: <Identity ... Publisher="CN=$username$" Version="1.1.0.0" />
The $username$ should have been replaced by CN=995C8641-FD13-454D-B93F-C1E4381956B9.

Another problem, related to arguments parsing is that build.js ignores options.archs and take it if I set options.argv='--archs=x64'