What happens with a production profile that is Volume-based when you have a shutdown?

If the well has a Volume based profile, the production profile will pause during the shutdown period and then the remaining volume will be delayed and moved to a later stage when the shutdown finishes. If the shutdown is very long, the remaining volume will end after the last year of visible years in your simulation, thus production will be cut off at that point. You may extend the number of visible years in your setup to see how long the production will be delayed.