Yeah this is normal. The SA page gets it's data for SAM site locations at mission start (like the data cartridge was prepared before you click 'fly'), before the persistency script can remove the units from the map. Unfortunately, there isn't anything I can do about that one.
Edit: I've just jumped in to look at the D/L of the Stennis Hornets, for me when I switch the D/L on for each plane it is set to 127. This isn't something you can set in the editor either so I'm not sure why it's showing up different for you.