Changed at/updated at information for subtask column following API deprecation

Hello!

Following the API deprecation we ran into a few breaking changes - I believe I’ve resolved most of these now but there’s one I don’t seem to be able to find a solution for so was looking to see if I’m (hopefully) missing something obvious, or if there’s a different way around this.

Previously on the old API as part of our query we received changed_at for certain column types as part of the value field within column_values for items. This now always returns null for the subtask column, as documented with the change, but the documentation advises using fragments to return the missing fields, showing the board_relation type and linked_items with name and updated_at as an example (https://developer.monday.com/api-reference/changelog/value-field-now-returns-null-on-connect-boards-dependency-and-subtasks-columns).

I’ve tried to replicate this with SubtasksValue instead, but nothing seems to be an accepted field. I can get the updated_at field at the item level, and then at the subitem level, but how do I get what used to be changed_at for the subtask column itself with the new API version? I can’t seem to find any documentation around SubtasksValue in general, so is there a different field I can call for this?

For reference this is the latest call I’m using which now returns everything I need after the other changes - minus the changed_at field for the subtask/subitems column itself:

{
  "query": "{ 
    boards(ids: " + lib.Config.Ids + ") { 
        name state permissions 
            items_page(limit: 100) { cursor 
                items { 
                    id name updated_at column_values (ids: [ " + lib.Config.columnIds + "]){ 
                        id text value type title: column { title } 
                        ... on BoardRelationValue { display_value linked_items {name updated_at} } 
                        ... on MirrorValue { display_value } 
                        ... on SubtasksValue { subitems { id name updated_at column_values { id text value type title: column { title } } } } } } } } }"
}

Any help would be appreciated! 

Thanks