Ex2003, see nothing in SMTP sessions?

I am running one Exchange 2003 with one Exchange 5.5 connected. I am almost done with my migration and I notice that when I look at my Exchange 2003 SMTP sessions, no one shows up?

I am pretty sure that the Exchange 2k3 server is the one sending meial oput as message headers say this server and not the old one.

What am I missing here?