#27 archived workflow not immutable

[John King]

The workflow on an archived document is not immutable.

When you archive a document with a completed workflow,
that workflow should stay in the state it was. However,
if you open the document in the archive, the workflow
has become empty and the red cross is shown. You can
then complete the workflow in the archive (!) and get
to a stage where the publish button becomes active
(which then obviously fails as we're in the archive).