FYI, I submitted a pull request to consolidate document related properties.

Sorry for the long delay - I was hoping to get to it before today's call, but at least I set aside time for after the call.
In any event, the pull request for the JSON schema change I submitted follows what we agreed to in this email thread:
https://www.oasis-open.org/apps/org/workgroup/csaf/email/archives/201805/msg00016.html
Eric.