Levi's migrated from Hyperion FDM Classic to FDMEE and learned several lessons during the process. Key aspects of the migration included transforming import scripts, simplifying mappings between dimensions, and moving historical data. Levi's also began using DRM to centrally manage brand and cost center hierarchies between Essbase and FDMEE for improved data alignment. The migration helped address prior pain points around complex mappings and inconsistencies while reducing reliance on IT resources.