In addition to updating the normal URLs, we must replace the URLs generated by Visual Composer.
After replacing http(s):// URLs, we must do the same with http%3A%2F%2F.
So, the replacement would look something like http%3A%2F%2Fyoursite.com –> http://yournewsite.com.
Source: http://www.wpbeginner.com/plugins/how-to-update-urls-when-moving-your-wordpress-site/