Hi Susan,
This is something we have recently come across as well and were told it is not currently possible in WF. We put in a feature request for this back in September.
On a side note, we also started using "Last Note: Note Text field" instead of last "Condition Note" because often the note would only appear if the task is assigned to the user or if the user is assigned to the project. The former shows the latest note, regardless of who wrote it (this is more critical for tasks as opposed to project...but worth noting).
Sara