> how do you explain to a non-technical user that their data has been deleted on the server, but that their client still has a cached copy that they might want

> how do you explain to a non-technical user that their data has been deleted on the server, but that their client still has a cached copy that they might want to try to salvage somehow? “The message has been deleted, but your app still shows it. You will not be able to see the message again if you discard it, and it will disappear soon.”