Hi Buk, your question has not been deleted.

Maybe you're getting confused with the View option, at the top of the threads list there is a "View" dropdown:



That can be set to different options which will hide different threads.

Like if you set it to "View: Unread discussions" then threads that you have read will be hidden.

They aren't deleted they're just temporarily screened out.

If you set it to "View: All discussions" you should see your question is still there.

- Michael