Upgrading from Dynamics NAV to Dynamics 365 Business Central

 Upgrading from Dynamics NAV to Dynamics 365 Business Central requires a phased approach and involves several steps. While it's generally possible to upgrade from NAV to Business Central, the specific upgrade path depends on your current NAV version and whether your application is customized or not. You may need to upgrade through intermediate versions before reaching the target Business Central release. 

Here's a more detailed breakdown:

1. Prerequisites and Considerations:

• Check Compatibility:

  Ensure your current NAV version is compatible with the target Business Central release. Refer to the Dynamics 365 Business Central Upgrade Compatibility Matrix for specific information. 
• Customizations:

  If your NAV solution has customizations, you'll need to convert them to extensions for Business Central, which can involve significant work. 
• Data Encryption:

  If you're using data encryption on your NAV deployment, you'll need to disable it before upgrading and re-enable it after the upgrade. 
• .NET Framework:

  Consider the impact of .NET framework changes. Business Central Server runs on .NET 6.0, which might require updating references in your code. 
• Plan for a full upgrade:

  Learn Microsoft recommends a full upgrade (platform and application) instead of just a technical upgrade to version 22 or later to save time and benefit from the latest features. 

2. Upgrade Process:

• Install the new version:

  Download and install the new Business Central release on a test server, keeping your existing NAV installation active. 
• Code/Object Upgrade:

  Use the provided migration tools to upgrade your code and objects to the new Business Central version. 
• Reproduce Customizations:

  If you have customizations, convert them to extensions and add-ons. 
• Validation and Testing:

  Thoroughly test the upgraded solution to ensure it functions correctly and meets your business requirements. 
• User Acceptance Testing:

  Involve end users in the testing process to ensure the upgraded system meets their needs. 
• Data Upgrade:

  Perform data upgrades to ensure your data is compatible with the new Business Central version. 

3. Important Considerations:

• Intermediate Upgrades:

  You might need to upgrade through intermediate versions to reach your target Business Central release. 
• Application Compatibility:

  Ensure your application is compatible with the Business Central release you are upgrading to. Learn Microsoft provides guidance on upgrading customized C/AL applications to the latest version. 
• Documentation:

  Refer to the Business Central Upgrade Compatibility Matrix for specific upgrade paths and prerequisites. 
• Support:

  Learn Microsoft provides details on upgrading Microsoft System and Base Applications, including extensions. 
• Control Add-ins:

  If your solution uses control add-ins, you'll need to upgrade them to the latest version.