WP Engine is my webhost
If you are on WP Engine, you need to contact WP Engine support and let them know that you want to whitelist the following QUERY ARGS & COOKIES to prevent caching.
utm_campaign utm_source utm_term utm_medium utm_content gclid first_utm_campaign first_utm_source first_utm_term first_utm_medium first_utm_content handl_original_ref handl_landing_page handl_ip handl_ref handl_url organic_source gaclientid //and all the custom parameters created by you
utm_campaign utm_source utm_term utm_medium utm_content gclid //and all the custom queries you are capturing
Usually, this process takes couple of hours to complete. Hoever, you may want to wait longer for changes to completely take effect.
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