diff --git a/addons/api/addon/adapters/scope.js b/addons/api/addon/adapters/scope.js
index f078e89df..27aa02e57 100644
--- a/addons/api/addon/adapters/scope.js
+++ b/addons/api/addon/adapters/scope.js
@@ -1,5 +1,4 @@
 import ApplicationAdapter from './application';
-import { serializeIntoHash } from '@ember-data/adapter/-private';
 
 export default class ScopeAdapter extends ApplicationAdapter {
 
@@ -11,27 +10,4 @@ export default class ScopeAdapter extends ApplicationAdapter {
    */
   hasScopePrefix = false;
 
-  // =methods
-
-  /**
-   * Identical to default method except that we pass a query parameter
-   * indicating the parent scope.
-   * @override
-   * @param {Store} store
-   * @param {Model} type
-   * @param {Snapshot} snapshot
-   * @return {Promise} promise
-   */
-  createRecord(store, type, snapshot) {
-    const parentScopeID = snapshot.attr('scope').attr('scope_id');
-    let url =
-      this.buildURL(type.modelName, null, snapshot, 'createRecord');
-    // TODO this should be generalized into `buildURL`, but currently Ember Data
-    // doesn't provide a way to manage query parameters.  They are passed on
-    // to the underlying ajax/fetch service.
-    url = `${url}?scope_id=${parentScopeID}`;
-    const data = serializeIntoHash(store, type, snapshot);
-    return this.ajax(url, 'POST', { data });
-  }
-
 }
diff --git a/addons/api/addon/serializers/scope.js b/addons/api/addon/serializers/scope.js
new file mode 100644
index 000000000..5e336e65f
--- /dev/null
+++ b/addons/api/addon/serializers/scope.js
@@ -0,0 +1,11 @@
+import ApplicationSerializer from './application';
+
+export default class ScopeSerializer extends ApplicationSerializer {
+
+  /**
+   * Serialize the scope ID into scope_id.
+   * @type {boolean}
+   */
+  serializeScopeID = true;
+
+}
diff --git a/addons/api/app/serializers/scope.js b/addons/api/app/serializers/scope.js
new file mode 100644
index 000000000..cdc15f3a2
--- /dev/null
+++ b/addons/api/app/serializers/scope.js
@@ -0,0 +1 @@
+export { default } from 'api/serializers/scope';
diff --git a/addons/api/tests/unit/adapters/scope-test.js b/addons/api/tests/unit/adapters/scope-test.js
index b38f491ce..f62f074a8 100644
--- a/addons/api/tests/unit/adapters/scope-test.js
+++ b/addons/api/tests/unit/adapters/scope-test.js
@@ -16,18 +16,4 @@ module('Unit | Adapter | scope', function(hooks) {
     assert.equal(prefix, `v1`);
   });
   
-  test('it generates correct createRecord URLs with a scope_id query parameter', function (assert) {
-    assert.expect(1);
-    this.server.post('/v1/scopes', (schema, { queryParams }) =>{
-      assert.equal(queryParams.scope_id, 'o_1');
-    });
-    const store = this.owner.lookup('service:store');
-    const scope = store.createRecord('scope', {
-      scopeID: 'o_1'
-    });
-    const type = scope.constructor;
-    const snapshot = scope._createSnapshot();
-    const adapter = this.owner.lookup('adapter:scope');
-    adapter.createRecord(store, type, snapshot);
-  });
 });
diff --git a/addons/api/tests/unit/serializers/scope-test.js b/addons/api/tests/unit/serializers/scope-test.js
new file mode 100644
index 000000000..d8b783344
--- /dev/null
+++ b/addons/api/tests/unit/serializers/scope-test.js
@@ -0,0 +1,31 @@
+import { module, test } from 'qunit';
+import { setupTest } from 'ember-qunit';
+
+module('Unit | Serializer | scope', function(hooks) {
+  setupTest(hooks);
+
+  test('it serializes scope_id into payloads', function (assert) {
+    assert.expect(2);
+    const store = this.owner.lookup('service:store');
+    const serializer = store.serializerFor('scope');
+    serializer.serializeScopeID = true;
+    const record = store.createRecord('scope', {
+      name: 'My Scope',
+      description: 'Foo',
+      type: 'org',
+      scope: {
+        scope_id: 'global',
+        type: 'global'
+      }
+    });
+    const serializedRecord = record.serialize();
+    assert.equal(serializer.serializeScopeID, true);
+    assert.deepEqual(serializedRecord, {
+      name: 'My Scope',
+      description: 'Foo',
+      type: 'org',
+      scope_id: 'global'
+    });
+  });
+
+});
diff --git a/ui/core/mirage/config.js b/ui/core/mirage/config.js
index bbb7d46d9..cd9b48928 100644
--- a/ui/core/mirage/config.js
+++ b/ui/core/mirage/config.js
@@ -26,12 +26,12 @@ export default function() {
     });
     return results;
   });
-  this.post('/scopes', function ({ scopes }, request) {
+  this.post('/scopes', function ({ scopes }) {
     // Parent scope comes through the payload via `scope_id`, but this needs
     // to be expanded to a scope object `scope: {id:..., type:...}` before
     // saving, which is the gist of this function.
     const attrs = this.normalizedRequestAttrs();
-    const parentScopeAttrs = this.serialize(scopes.find(request.queryParams.scope_id));
+    const parentScopeAttrs = this.serialize(scopes.find(attrs.scopeId));
     attrs.scope = parentScopeAttrs;
     return scopes.create(attrs);
   });