diff --git a/addon/-private/system/model/internal-model.js b/addon/-private/system/model/internal-model.js
index 06b283de3e1..aeaacb122f4 100644
--- a/addon/-private/system/model/internal-model.js
+++ b/addon/-private/system/model/internal-model.js
@@ -898,8 +898,12 @@ export default class InternalModel {
         }
       }
     });
-    Object.keys(this._implicitRelationships).forEach((key) => {
-      let rel = this._implicitRelationships[key];
+
+    let implicitRelationships = this._implicitRelationships;
+    this.__implicitRelationships = null;
+
+    Object.keys(implicitRelationships).forEach((key) => {
+      let rel = implicitRelationships[key];
 
       rel.removeCompletelyFromInverse();
       if (isNew === true) {
@@ -919,8 +923,11 @@ export default class InternalModel {
         rel.removeInverseRelationships();
       }
     });
-    Object.keys(this._implicitRelationships).forEach((key) => {
-      this._implicitRelationships[key].removeInverseRelationships();
+
+    let implicitRelationships = this._implicitRelationships;
+    this.__implicitRelationships = null;
+    Object.keys(implicitRelationships).forEach((key) => {
+      implicitRelationships[key].removeInverseRelationships();
     });
   }
 
diff --git a/tests/integration/relationships/has-many-test.js b/tests/integration/relationships/has-many-test.js
index 5794fc3c364..01a24b158a7 100644
--- a/tests/integration/relationships/has-many-test.js
+++ b/tests/integration/relationships/has-many-test.js
@@ -2134,10 +2134,8 @@ test("Relationship.clear removes all records correctly", function(assert) {
     var comments = Ember.A(env.store.peekAll('comment'));
     assert.deepEqual(comments.mapBy('post'), [null, null, null]);
   });
-
 });
 
-
 test('unloading a record with associated records does not prevent the store from tearing down', function(assert) {
   var post;
 
@@ -2755,6 +2753,70 @@ test("PromiseArray proxies createRecord to its ManyArray before the hasMany is l
   });
 });
 
+test("deleteRecord + unloadRecord fun", function(assert) {
+  User.reopen({
+    posts: DS.hasMany('posts', { inverse: null })
+  });
+
+  run(() => {
+    env.store.push({
+      data: [
+        {
+          type: 'user',
+          id: 'user-1',
+          attributes: {
+            name: 'Adolfo Builes'
+          },
+          relationships: {
+            posts: {
+              data: [
+                { type: 'post', id: 'post-1' },
+                { type: 'post', id: 'post-2' },
+                { type: 'post', id: 'post-3' },
+                { type: 'post', id: 'post-4' },
+                { type: 'post', id: 'post-5' }
+              ]
+            }
+          }
+        },
+        { type: 'post', id: 'post-1' },
+        { type: 'post', id: 'post-2' },
+        { type: 'post', id: 'post-3' },
+        { type: 'post', id: 'post-4' },
+        { type: 'post', id: 'post-5' }
+      ]
+    });
+
+    let user = env.store.peekRecord('user', 'user-1');
+    let posts = user.get('posts');
+
+    env.store.adapterFor('post').deleteRecord = function() {
+      // just acknowledge all deletes, but with a noop
+      return null;
+    };
+
+    assert.deepEqual(posts.map(x => x.get('id')), ['post-1', 'post-2', 'post-3', 'post-4', 'post-5']);
+
+    return run(() => {
+      return env.store.peekRecord('post', 'post-2').destroyRecord().then(record => {
+        return env.store.unloadRecord(record);
+      });
+    }).then(() => {
+      assert.deepEqual(posts.map(x => x.get('id')), ['post-1', 'post-3', 'post-4', 'post-5']);
+      return env.store.peekRecord('post', 'post-3').destroyRecord().then(record => {
+        return env.store.unloadRecord(record);
+      });
+    }).then(() => {
+      assert.deepEqual(posts.map(x => x.get('id')), ['post-1', 'post-4', 'post-5']);
+      return env.store.peekRecord('post', 'post-4').destroyRecord().then(record => {
+        return env.store.unloadRecord(record);
+      });
+    }).then(() => {
+      assert.deepEqual(posts.map(x => x.get('id')), ['post-1', 'post-5']);
+    });
+  });
+});
+
 test("unloading and reloading a record with hasMany relationship - #3084", function(assert) {
   var user;
   var message;