It was decided that "Benkei" would be conserved in Sapporo. The Sapporo Railways Handicrafts Office then examined the remains of the scrapped engines, and attempted to trace the remnants to the individual engines of the Class 7100, and to the ones purchased from H.K. Porter. Their findings were actually surprising, reassessing the entire history of which model/series numbers and names belonged to which trains, and in what years they were manufactured. It was decided to conserve "Shizuka" (7106), but the Japan Steel Works Ltd. felt it was unnecessary. Ultimately, a trade was worked out in which the corporation received scrap metal in exchange for returning the locomotive.