frameTags and multiple files

The exported “frameTags” don’t include their corresponding frame when exporting more than one file using aseprite CLI.

{ "frames": {
   "fileA 0.ase": {}
   "fileA 1.ase": {}
   "fileA 2.ase": {}
   "fileB 0.ase": {}
   "fileB 1.ase": {}
   },
 "meta": {
  "app": "https://www.aseprite.org/",
  ...
  "frameTags": [
   { "name": "run", "from": 0, "to": 
, "direction": "forward", "color": "#000000ff" },
   { "name": "idle", "from": 1, "to": , "direction": "forward", "color": "#000000ff" },
  ]
}

I don’t know which file “run” “idle” corresponds to.

I believe “slices” have the same issue.

btw: Aseprite is an awesome piece of software!

    .arg("--tagname-format")

This did the trick. Not sure if there is a similar solution for slices though