All threads and posts regarding Coronavirus COVID-19 can be found in our area specifically for Coronavirus COVID-19 discussion.
You can directly access this area >here<.
"Go back to where you were posting and click on 'post a comment' ie start a new post, with any luck you should get a message at bottom left, click on it."
'Just lost mine and sure enough the above sorted it out, thanks.'
It's not there forever, I think it's the same time as an attachment remains accessible if you don't post the message.