As of 2019-11-27 Funnel will no longer export optional fields to Google Data Studio.
What is an "optional field"?
An optional field is a field available in one of your datasources schema but that isn't configured to be downloaded.
Why doesn't Funnel export them to Data Studio?
- Optional fields will never have any data unless you change your datasource configuration
- Data Studio will run smoother with less fields
What do I do if I've reconfigured my datasource and I still don't see the fields?
Refresh your fields in Data Studio as explained here