The current section for [exported fields](https://www.elastic.co/guide/en/apm/server/current/exported-fields.html) has some flaws: * repetition of _fields_, see [General APM fields fields](https://www.elastic.co/guide/en/apm/server/current/exported-fields-apm.html) * unexpected structures, e.g. having context fields, but then also putting some of the context fields into other sections, https://www.elastic.co/guide/en/apm/server/current/exported-fields-apm.html * including Kibana only fields