Changing Subject Alternate Names not triggering new certificate

[biggles007]

I created a certificate using az-acme, but when adding some alternate subject names to the CLI request the returned action is None, though I can see the new SAN's in CLI output. I'm running CLI version 0.4 on Windows. Is this an issue with az-acme or Lets Encrypt? I'd expect a change in SAN to either request a certificate renewal or for a forced order to be placed.