Reindex operation in Index State Management

[dzanto]

Hello.
I want to schedule a removing fields in old indexes, for reducing size.
Usually it's doing by reindexing with filter or script, for example:

POST _reindex
{
   "source": {
      "index": "journal-dev-000326",
      "_source": {
         "excludes": ["payloadData","metaData"]
      }
   },
   "dest": {
      "index": "reindex-journal-dev-000326"
   }
}

and then remove source index.

Adding this feature to ISM would make the process easier and automatic.