Question on Exchange updates after SP2

Good Day,

I am planning on upgrading our Exchange Server to SP2 from SP1. We are
running on Server 2003 SP1.

From what I can see After I install SP2 the only other updates that I will
need to apply to bring me up to date are the following

916803 MS06-019
912442 MS06-029

After looking on Security Bulletin Search and choosing the following as my
options
Exchange 2003
Service Pack 2
All Updates Severity are checked and Bulletin release date is set to all.

What I don't understand is that when I checked the page that shows the fixes
for Exchange SP2. I did not see the following items listed as being fixed

984549 MS05-021
873333 MS05-012

If I would have chosen only Exchange with SP1 I would also see these two
with the other two 984549, 873333 and 916803, 912442.

Can someone please help me out and explain or let me know what I am not
seeing or missing here. I would like to get all the updates installed after
I install SP2

Thank You
Adam Raff