November 2025 monthly summary for odoo/upgrade-util focused on delivering a safe data migrations enhancement and groundwork for future rollback capabilities. Key feature delivered: Database Column Backup System enabling backup of column values during updates or deprecations by creating a backup column (suffix '_upg_copy') via util/pg.py. This improves data integrity during migrations and reduces risk for customers during upgrades. No major bugs fixed this month for this repo. Overall impact: safer upgrade workflows, clearer rollback options, and measurable confidence for customers and team. Technologies demonstrated: Python utility development, code hygiene, migration tooling design, git commit discipline, and collaboration with upgrade tooling team.