share library no indicator for unwatched shows

Hi,

I have an iMac which has all the media. I turned on Sharing. Recently I bought a MacBook Pro. I can access from the laptop my library on the iMac just fine, but what I don't see are the indicators if a TV show or movie was already watched. This works fine with my ATV.

I have enabled "update play counts" on my iMac and MacBook Pro. There is no media in my iTunes library on my MacBook Pro. I want to use the laptop only for accessing the library on my iMac.

How can I see in a shared library if I have seen a movie or TV show?

Thanks,

Edy