Worked on enhancing migration reliability in the odoo/upgrade-util repository by addressing ImportError issues during the pre-migration process. Focused on backend development using Python, the solution introduced a robust try/except import pattern within the base pre-migration script, allowing seamless fallback to the legacy openerp namespace when standard modules were unavailable. This approach ensured compatibility across both standard and symlinked environments, reducing the risk of migration failures for customers with older OpenERP or Odoo installations. The fix was validated across multiple setups, improving the stability of upgrade paths and minimizing downtime for users maintaining legacy systems during migration processes.