Hi James,
Thank you for pointing this out.
Since you’re currently running Joomla 5, the correct plugin to disable when preparing for a Joomla 6 upgrade is “Behaviour - Backward Compatibility”.
The screenshot showing “Behaviour - Backward Compatibility 6” is misleading in this context and does not match the instruction in the documentation. We appreciate you bringing this to our attention and will review the documentation to correct the screenshot and avoid confusion for other users.
Please follow the written instructions and disable “Behaviour - Backward Compatibility” when performing the Joomla 5 to Joomla 6 upgrade.
Thank you for your feedback.
Best regards,