That is a valid question that deserves an honest answer. The answer is... I have no idea.
That answer, along with random outbursts of profanity, will be used extensively throughout my software explorations.
I bought LR4 for a class that doesn't start until the fall. I figured I'd fire it up and do some reading/playing so I'm not chasing my tail when school resumes. For the past few semesters I've been struggling to keep up with PS stuff so I'm hitting the books on my own to get on track.
I labled some images with red in Bridge as I wanted to play with them later and was hoping they would be recognized in LR4 with the red marker when imported.
Finding them manually shouldn't be an issue if that is the best way to go.