Archive Store

controllers.application\.js

import Controller from '@ember/controller';
import { inject as service } from '@ember/service';
import { set, action } from '@ember/object';
import { tracked } from '@glimmer/tracking';

export default class ApplicationController extends Controller {
  @service store;
  @service archive;
  
  @tracked archivedRecord = null;
  @tracked record = this.store.push({ data: {
    type: 'audit',
    id: '1',
    attributes: {
      name: 'My Audit',
      flattened: {
        type: 'audit',
        id: '1',
        attributes: { name: 'My Audit' }
      }
    }
  }});

  @action
  updateArchive() {
  	const record = this.archive.push({
      data: this.record.flattened
    });
    this.archivedRecord = record;
  }

  @action
  updateName() {
    set(this.record.flattened.attributes, 'name', this.record.name);
  }
}

models.audit\.js

import Model, { attr }  from '@ember-data/model';
/*
import attr from 'ember-data/attr';
import { belongsTo, hasMany } from 'ember-data/relationships';
*/

export default class extends Model {
  @attr name;
  @attr flattened;
}

services.archive\.js

import Store from '@ember-data/store';

export default class extends Store {}

templates.application\.hbs

<h1>Welcome to {{this.record.name}}</h1>
<h2>My current flattend name is: {{this.record.flattened.attributes.name}}</h2>
<Input @value={{this.record.name}}/>
<button {{on "click" (fn this.updateName this.record.name)}}>Update Archived Name</button><br>
<h2> Archived Name: {{this.archivedRecord.name}}</h2>
<button {{on "click" this.updateArchive}}>Update Archive</button><br>
<br>
<br>
{{outlet}}
<br>
<br>

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0",
    "ember-data": "3.18.0"
  }
}