Just a question about a siem rule filter

Hello @Andrew_G,

Thanks a lot for the detailed explanation. Just to get to the bottom of this...

(:eyes: focus on the EDIT FILTER popover):

When I click 'Edit filter' I do not see the meta and $state keys:

This is normal right? (The rule has been duplicated and edited, but I did not touch this filter)

I just find it weird that pasting

{
  "exists": {
    "field": "user_agent.original"
  }
}

Seems to have the same result as pasting

{
    "$state": {
        "store": "appState"
    },
    "exists": {
        "field": "user_agent.original"
    },
    "meta": {
        "disabled": false,
        "indexRefName": "kibanaSavedObjectMeta.searchSourceJSON.filter[0].meta.index",
        "key": "user_agent.original",
        "negate": true,
        "type": "exists",
        "value": "exists"
    }
}

After saving any of the above and going back to 'Edit filter', I always see:

Grtz

Willem