[jasong]

Just so I'm offerring more than griping, I should point out that you can turn that single action into a project and put that project on hold; just select the action, press command-control-left arrow (or command-[). The action will now appear in your projects list.

If you had a future date associated with the action, it might appear that it was deleted; it's not, just hidden; check your Projects filter, it should appear under Pending.