I just had a GM email telling me that if a SG member quits the SG not only can you lose the 20k start prestige if the total membership drops below 15, but you also lose ALL prestige that member earned while in the SG. The member doesn't "take" it with them, it's just lost completely! I thought prestige earned for a SG became the property of the SG not still tied to the orginal player that earned it! I PM'ed Posti but haven't received any response.