Yes, custom modules can be migrated to Odoo, but they must be properly adjusted during the upgrade process. During Odoo migration, custom modules are updated to match the new system structure. In an Odoo upgrade, code changes are required to ensure compatibility with the latest version. With professional Odoo migration services, both modules and system data are handled safely. This includes Odoo database migration, Odoo database upgrade, and smooth Odoo data migration without losing business information. Conclusion Custom modules can be successfully moved to a new Odoo version when proper Odoo migration, Odoo upgrade, and structured database handling are done carefully.