The support for migration from BASE 1.2 to BASE 2 ended in BASE 2.6, but the migration program was included in the distribution until BASE 2.15. As of BASE 2.16 the migration program is no longer included in the distribution. Our recommendation for migration is to try BASE 2.15 first and then upgrade to the newest BASE version. Full instructions for the migratation program are included in the BASE 2.15 distribution.