Reindex API not working as expected from remote

[_greg]

Hi,

I want to reindex my daily indices into one 'master index'.
When I execute the following command from the Dev Tools in Kibana in the Elastic Cloud, it's working like expected:

POST _reindex
{
  "source": {
    "index": "index-2019.08.*"
  },
  "dest": {
    "index": "index-all"
  }
}

All fields are copied to the new index.

However, when I try the same over curl from remote or with curator, the request succeeds but the dest index only contains following fields:

_id
_index
_score
_source
_type

How can I reindex all fields with curator or over curl?

[Alex_Piggott]

Given that the reindex command works in the dev tools, I suspect this is a stack question not a cloud question, I'm going to move it there. Apologies in advance if there is a cloud subtlety I'm missing and it ends back here