Hey there, unfortunately, it is not possible to transfer the Account Duration from your old bungie.net User Account to your new one. The Account Duration is absolutely restricted to the bungie.net User Account, and that Account alone, since the Account Duration is defined by the date when the bungie.net User Account was created. Your old Account has a duration of 7 Years. Your new one has a duration of 2 years. There's nothing that can be done. Sorry about that.