Actually, the latest version v4.0+ of the WP Travel plugin provides the ‘Switch to V4’ option to update the WP Travel plugin settings from the previous version to the newer settings built-in React of WP Travel.
After updating to WP Travel’s latest version(after 4), your plugin setting will not immediately upgrade to Version 4.
For a new setting, you have to enable the ‘Switch to V4‘ option by going to Admin Panel > WP Travel > Settings > General
So, if the previous setting is being displayed even after updating WP Travel to the latest version(after 4), please make sure that the option has been enabled by going to Admin Panel > WP Travel > Settings > General
Further, if you have any queries, please submit them to our Contact page.