Upgrade AWX from 17.1.0 to 19.2.2

Hello,

Can anyone tell me the steps to upgrade AWX 17.1.0 to 19.2.2 and use data from external postgres?

Use tower-export module or tower-cli export to export your configuration as json. Install new Awx. Reimport. You will have to redo your credentials

https://docs.ansible.com/ansible-tower/latest/html/towercli/examples.html

https://docs.ansible.com/ansible/2.10/collections/awx/awx/tower_export_module.html

Weiye ? in my case tower-cli is also solution where I have postgresql 12 as internal container?