Those engines which had been purchased by the Hokkaidō construction bureau continued to be used for those purposes until 1950, when they were sent to the JNR Naebo factory. 7100 was used in an exhibition for the 70th anniversary of the Hokkaidō railroad, but 7102 was dismantled in 1952. That same year, in honor of the 80th anniversary of certain railroad operations in Japan, it was decided that "Yoshitsune", now identified as 7105, would be restored at the factory in Takatori. A number of parts, including the water tank and coal store had to be replaced, and though the whole project was rushed to be completed in four months, it was said to have been completed beautifully. The same year, 7106 was handed over ahead of schedule, by the Japan Steel Works, and restoration began using parts from 7100.