How to change the Content Author Message status from Awaiting Expiry to Expired in EngageOne Content

In order to change message status from awaiting expiry to Expired in Content author  one needs to publish the messages to expire them.

The expiry property is only meant to control when a message is shown.

That is messages past their expiry will continue to be published in the him but it will not be displayed in the generated document.

In other words, the property is only relevant for Doc1 Generate. 
UPDATED:  August 24, 2017