How to populate firebase before running acceptance tests in ember?

Question

Ember.js

 I'm trying to lock the base like this

moduleForAcceptance(name, {
    beforeEach () {
      scenarioDefault(server)

      stubFirebase()
      this.firebaseReference = createOfflineFirebaseReference(FIXTURE_DATA)
      replaceFirebaseReference(this.application, this.firebaseReference)

      if (options.beforeEach) {
        options.beforeEach.apply(this, arguments)
      }
    },

    afterEach () {
      if (options.afterEach) {
        options.afterEach.apply(this, arguments)
      }

      unstubFirebase()
    }
  })

where FIXTURE_DATA looks something like this

export default {

  "monthWeeks": {
    "month_1_tree_1_week_1": {
      "monthTree": "month_1_tree_1",
      "name": "1_Week_Name",
      "position": 0
    }
  },

  "monthTrees": {
    "month_1_tree_1": {
      "month": "month_1",
      "monthWeeks": {
        "month_1_tree_1_week_1": true
      }
    }
  },

  "months": {
    "month_1": {
      "name": "1_Name",
      "monthTree": "month_1_tree_1"
    },
    "month_2": {
      "name": "2_Name"
    }
  }
}

i'm using firebase adapters for all models (month, monthTree, monthWeek) but when debugging tests i see that all models hit the store but individually and not in a tree structure as expected and so for example i can't call such code because there is no such object and array in month, but separately monthWeeks is obtained. Any ideas why this might be happening? Thank you.
month.get('monthTree.monthWeeks.firstObject')