Like I said above no. But maybe that old players can still rebuy them when they played graal that time.
Like:
Player 1 started Graal at 5.21.2010 and a hat was sold at 5.26.2010 he can buy it. But Player 2 who started Graal at 5.28.2010 canīt buy it anymore. Newbies would be crying around but for the older Graal players its still nice.
Even I donīt like that idea that idea, it could be a nice resolution for both sides.