 In 2004, following a deal with Tranz Rail's new owners Toll NZ, the Corporation took over responsibility for maintaining and upgrading the rail network once more, trading under the name ONTRACK.Negotiations with Toll over track access charges concluded after four years with no agreement reached, so the government purchased the entire rail and ferry operations, naming the service KiwiRail.ONTRACK's railway infrastructure and employees were then transferred to KiwiRail in 2008, which itself was initially a subsidiary of the Corporation.