Yes, several draft versions may be exchanged. As soon as we receive a draft from the principal, we begin validating it. Further draft versions can be sent as changes are made. Ultimately, a final draft is sent to the deputy minister, who is asked to confirm the facts and to give us a reply from the department or from the government. This is, as it were, the final draft. No further draft versions are sent out after this, and the text is printed.
On February 5th, 2007. See this statement in context.