The VVR-M reactor in Kiev was used 36% enriched fuel and has been converted to LEU in 2009 - the LEU fuel assemblies were delivered to the site in 2009.
UPDATE: According to a GAO Report, released in December 2010, the shipment involved 56 kg of HEU in spent fuel, which represents "more than a third of Ukraine's HEU inventory" (p. 27).