What's New: 2019
If you previously installed an older version of Inventor (starting with Inventor 2018), the Migrate Custom Settings dialog appears when you start Inventor.
Check the options to migrate your Application Options preferences and user interface customization settings to the new version and then click OK.
If you dismiss the dialog without migrating, you can migrate the settings later by doing the following:
Restart Inventor after migration to use the new settings.