New Delhi - The commerce department is seeking to amend the law governing special economic zones (SEZs), offering several concessions as it seeks to revive the enclaves to boost exports and activity within the economy.At a meeting convened by commerce and industry minister Piyush Goyal on Monday, the plan discussed with exporters included allowing sales in the domestic tariff area (DTA) - which is the area outside the SEZ - on a duty forgone basis. Under the current regime, shipments from SEZs to an Indian seller in the DTA attract import duty equivalent to what any consignment from another country faces . . .