Hello Sean,

We recently delivered an Odoo upgrade project from V16-v19, which is on Odoo.sh:

If the modules keep coming back after uninstall, it usually means the addons path still contains them or the database still has references.

Make sure to:

1. Remove the module folders from the addons path.

2. Restart Odoo and update the apps list.

3. Ensure the modules are not listed in the server config addons_path.

4. If needed, remove their records from ir_module_module (only if they are fully uninstalled).

Doing this in a sandbox first and then upgrading the cleaned database to production is a good approach.

If you still need any help or assistance in upgrading successfuly please contact: santosh.sekwadia@zehntech.com

Regards,
Zehntech Technologies Inc.