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Optimize your Odoo system migration: a complete guide to a successful ERP upgrade

Migrating to a new version of Odoo may seem complex, but with proper preparation and the support of an Odoo Gold Partner integrator, it becomes a strategic step in boosting your company's efficiency. In this article, we detail each phase of the Odoo migration, from the first preparatory steps through to the launch of the new version.
July 17, 2025 by
Optimize your Odoo system migration: a complete guide to a successful ERP upgrade
Emma Lenaerts (ele)

Odoo Migration in Three Steps

Migrating to a new version of Odoo is a crucial step to ensure the performance, stability, and security of your system. A poorly managed migration can cause bugs, break your custom developments, and disrupt your operations. In this article, we explain why migrating now is essential and how to avoid common mistakes that can occur during this process. Also, discover how Nalios' pragmatic, standards-first approach can secure your migration and allow you to achieve your goals without any hassle.

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Why opt for migration to the latest version of Odoo?  

With each new version of Odoo, significant improvements are made in performance, security, and features. Remaining on an outdated version can pose several risks to your business, including :

  • Functional limitations: Older versions of Odoo no longer benefit from the latest updates and features.
  • Security risks : The lack of regular updates exposes your system to security vulnerabilities.
  • Module incompatibility : Customizations and specific modules may not be compatible with older versions.
  • Increased operating costs : Older versions are often less efficient and require more maintenance time.

Concrete example : A company using Odoo 12 experienced slower performance and increased server load after continuing to use that version for too long. After migrating to Odoo 15, performance doubled, processes were simplified, and security was strengthened.

The risks of an unprepared migration

A poorly planned migration can lead to technical errors, data loss, and reduced adoption by teams. Here are some specific risks:

  • Incompatible modules : Custom modules may become obsolete or incompatible with the new version of Odoo.
  • Data loss : If the migration is not carried out properly, crucial data may be lost or corrupted.
  • Production stoppages : Prolonged shutdowns can harm your business and revenue.
  • Unforeseen costs : Technical debt accumulated in older versions may lead to additional costs during migration.

Les risques d'une migration mal préparée

The risks of poorly prepared migration

De riscio's van een slecht voorbereide migratie


 

Key steps in the Odoo migration process

1. Preparation for migration

Allocate Human and Technical Resources

Migrating Odoo can be an intensive process. Ensure that key users are available to participate in the preparation and ensure everything goes smoothly.

Check the Current Version of Odoo

Before beginning the migration, it’s essential to know the version currently used by your company. This will help you understand the available features and any potential incompatibilities with the new version.

Evaluate Third-Party Applications and Developments

External applications and custom developments must be considered to ensure they will be compatible with the updated version.

Analyze Existing Business Processes

Document how Odoo is currently used within your organization. This analysis will serve as the foundation for integrating improvements into the upgrade.

Test Odoo’s New Features

Before migrating, a demo or walkthrough of the new version of Odoo will allow you to evaluate the new features and adapt your processes accordingly.

 

2. The migration and testing phase

Collaborate with an Experienced Odoo Partner

A certified Odoo Gold Partner, like Nalios, is crucial to ensuring a successful migration. They should have full access to your environment and backups.

Validate Developments to Keep

Some custom developments may need to be excluded or enhanced to optimize the new version. A prior analysis is therefore essential.

Thoroughly Test the New Version

Testing is essential to ensure everything functions as expected. Forming a dedicated testing team will help identify errors before going live.

User Training

Although you are already familiar with Odoo, additional training is recommended to accommodate new features and changes. Train your internal ambassadors to ensure optimal system adoption.

 

3. After the migration: Ongoing follow-up and optimization

Post-Migration Follow-up

Once the new version is live, follow-up is necessary, especially during the first two weeks, to resolve any unexpected issues.

Continuous Optimization and Refining of Processes

Plan follow-up sessions to refine processes, provide new training, and explore continuous optimizations.

Management of Developments and Customizations

It is important to regularly evaluate custom developments. Those that are no longer used can be removed, which will make future migrations easier.

Les 3 étapes d'une migration Odoo sécurisée

The 3 steps to a secure Odoo migration

De 3 stappen voor een veilige Odoo-migratie


Case study : Auvray Energy — A successful Odoo migration with Nalios

Background : Auvray Energy, a company specializing in the installation of photovoltaic panels and charging stations, faced serious digitalization challenges before migrating to Odoo. The excessive use of manual processes and paper documents significantly slowed down its operations, leading to major inefficiencies, particularly in customer management and invoicing.

Problematic : Although the company started with Odoo 14, the initial implementation did not meet its expectations. The system had become too complex with unused custom developments, which complicated updates and maintenance.

Nalios Solution : After a thorough analysis, Nalios recommended a migration to Odoo 16, removing unnecessary customizations and optimizing existing processes. By eliminating approximately 75% of the redundant code, the standard Odoo solution was restored, simplifying the system.

Results :

  • Productivity improvement : Automating customer communications, such as sending SMS reminders, has reduced unnecessary travel and increased customer satisfaction.
  • Billing and quote optimization : Quote management has become more responsive, and expiration tracking has been automated.
  • System stability : Removing unnecessary customizations has enhanced stability and ease of future development.

Conclusion : Thanks to the migration to Odoo 16, Auvray Energy has doubled its productivity and optimized its processes. The collaboration with Nalios ensured a smooth transition and delivered substantial improvements to its daily operations.

Want to discover more testimonials?

Discover how XLG optimized their processes through Odoo migration!

Why choose Nalios for your Odoo migration?

Recognized Expertise for Your Migration Project

With over 10 years of experience, Nalios is one of the market leaders as an Odoo Gold Partner integrator. Our team of experts will guide you throughout the migration process, providing strategic advice and optimizing your developments for the latest version of Odoo.

A Personalized Approach Tailored to Your Needs

Every company is unique. At Nalios, we tailor migrations to your specific needs to ensure that you fully benefit from Odoo’s latest features while ensuring a smooth transition with no service interruptions.

Discover Your Future with Odoo

Contact Nalios today to start your Odoo migration with confidence. We are ready to help you modernize your ERP system and optimize the efficiency of your operations.

Ready to secure your migration ?

Request your free migration assessment. Our Odoo experts are ready to support you every step of the way to ensure a fast and secure migration.

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