You might try asking that question at the jeanneau-owners.com forum, there are a few, not many SM owners that post upon occasion. Also FYI, "Later mdels branded as Sun Odyssey 44 but also produced as the Atlantic 44, a local verson of the Sun Magic built under license from Jeanneau in Athens Greece" per some info on the owners site.
For some of us, a Baby stay needs to be used ALL the time, some, only up wind to keep the mast from pumping, ie moving back and forth, if this happens, you need the stay, if not, it makes tacking larger jibs easier.
She drives me boat,
I drives me dinghy!