When copying to, update the data offset properly.
When copying to, update the data offset properly.

Before we were updating it to match the old shard.  This is obviously
undesirable, broken behavior.

hyc/HyperDex,hyc/HyperDex,cactorium/HyperDex,tempbottle/HyperDex,vashstorm/HyperDex,UIKit0/HyperDex,cactorium/HyperDex,UIKit0/HyperDex,UIKit0/HyperDex,hyc/HyperDex,UIKit0/HyperDex,cactorium/HyperDex,pombredanne/HyperDex,cactorium/HyperDex,pombredanne/HyperDex,vashstorm/HyperDex,pombredanne/HyperDex,vashstorm/HyperDex,hyc/HyperDex,tempbottle/HyperDex,tempbottle/HyperDex,rescrv/HyperDex,hyc/HyperDex,UIKit0/HyperDex,rescrv/HyperDex,jtk54/HyperDex,rescrv/HyperDex,tempbottle/HyperDex,tempbottle/HyperDex,vashstorm/HyperDex,pombredanne/HyperDex,jtk54/HyperDex,tempbottle/HyperDex,rescrv/HyperDex,tempbottle/HyperDex,pombredanne/HyperDex,UIKit0/HyperDex,cactorium/HyperDex,rescrv/HyperDex,cactorium/HyperDex,tempbottle/HyperDex,vashstorm/HyperDex,pombredanne/HyperDex,vashstorm/HyperDex,vashstorm/HyperDex,cactorium/HyperDex,cactorium/HyperDex,jtk54/HyperDex,hyc/HyperDex,rescrv/HyperDex,jtk54/HyperDex,pombredanne/HyperDex,pombredanne/HyperDex,jtk54/HyperDex,UIKit0/HyperDex,tempbottle/HyperDex,pombredanne/HyperDex,cactorium/HyperDex,vashstorm/HyperDex,vashstorm/HyperDex,hyc/HyperDex,jtk54/HyperDex,rescrv/HyperDex,hyc/HyperDex,rescrv/HyperDex,UIKit0/HyperDex,jtk54/HyperDex,rescrv/HyperDex,UIKit0/HyperDex,jtk54/HyperDex,jtk54/HyperDex