Unintended modifications on imported tickets

Hi
These are bugs I see on the ticket import api, ref:
https://developer.zendesk.com/api-reference/ticketing/tickets/ticket_import/#ticket-import

1. Signature is applied to all comments where agent is comment author
   1. This seems strange as comments usually have a signature from before, which results in double signature
2. SLA metrics are generated for imported tickets
   1. See below JSON extract for an imported ticket (4 years old) that has its full resolution time set to today?

{

  "solved_at": "2020-05-28T08:23:26Z",

  "latest_comment_added_at": "2024-04-03T11:12:37Z",

  "reply_time_in_minutes": {

    "calendar": null,

    "business": null

  },

  "first_resolution_time_in_minutes": {

    "calendar": 635861,

    "business": 393941

  },

  "full_resolution_time_in_minutes": {

    "calendar": 635861,

    "business": 393941

  },

  "agent_wait_time_in_minutes": {

    "calendar": 0,

    "business": 0

  },

  "requester_wait_time_in_minutes": {

    "calendar": 0,

    "business": 0

  },

  "on_hold_time_in_minutes": {

    "calendar": 0,

    "business": 0

  }

}