 They were retired between 1998 and 1999, except for train 1-02, which was kept in service until June 2004.After trains 1-29~1-35 were retired, their motor cars were linked with other trains until 2006, and their unpowered cars (1829-1835 and 1929-1935) were rebuilt into driving cars by Rotem in 2002 and received new front ends.They were renumbered to cars 1088-1094 and 1188-1194 and were linked with newer first generation cars.