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Hey everyone, I'm planning to do database migration via OpenUpgrade. My project has 150+ custom addons. So i am thinking to do database migration version by version and code migration directly from 15 to 18.

Is it doable ? Or anyone has came across similar situation ?

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Autorius Best Answer

Answer to my own question:

I followed a sequential migration strategy.

First, I upgraded my database to Odoo 16, 17, and then 18, one version at a time—without any custom modules. This ensured that the core database was upgraded cleanly and without conflicts.

After completing the core migrations, I applied and adapted my custom modules on the Odoo 18 instance.

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