diff --git a/ui/core/mirage/config.js b/ui/core/mirage/config.js
index a74e8fe30..bbb7d46d9 100644
--- a/ui/core/mirage/config.js
+++ b/ui/core/mirage/config.js
@@ -183,12 +183,10 @@ export default function() {
   // target
 
   this.get('/targets', function ({ targets }, { queryParams: { scope_id } }) {
-    return targets.where(target => target.scope?.id === scope_id);
+    return targets.where(target => target.scopeId === scope_id);
   });
-  this.post('/targets', function ({ targets, scopes }) {
+  this.post('/targets', function ({ targets }) {
     const attrs = this.normalizedRequestAttrs();
-    const scope = scopes.findBy(scope => scope.id === attrs.scopeId);
-    attrs.scope = { id: scope.id, type: scope.type };
     return targets.create(attrs);
   });
   this.get('/targets/:id');
diff --git a/ui/core/mirage/models/target.js b/ui/core/mirage/models/target.js
index d33295663..8c2757e71 100644
--- a/ui/core/mirage/models/target.js
+++ b/ui/core/mirage/models/target.js
@@ -1,7 +1,8 @@
-import { Model, hasMany } from 'ember-cli-mirage';
+import { Model, belongsTo, hasMany } from 'ember-cli-mirage';
 
 export default Model.extend({
 
+  scope: belongsTo(),
   hostSets: hasMany()
 
 });
diff --git a/ui/core/mirage/scenarios/default.js b/ui/core/mirage/scenarios/default.js
index 7d4c343f8..d08c2fb75 100644
--- a/ui/core/mirage/scenarios/default.js
+++ b/ui/core/mirage/scenarios/default.js
@@ -12,25 +12,20 @@ export default function(server) {
     type: 'org',
     scope: { id: globalScope.id, type: globalScope.type }
   }, 'withChildren')[0];
-  const scope = { id: orgScope.id, type: orgScope.type };
+  const scopePojo = { id: orgScope.id, type: orgScope.type };
 
   // Auth
-
-  // Auth methods exist both at the global scope and the org scope.
-  // For simplicity we don't scope our mock auth methods and just return the
-  // same items for request at all scopes.
-  server.createList('auth-method', 3, { scope });
+  server.createList('auth-method', 3, { scope: scopePojo });
 
   // Groups and Users
-  server.createList('group', 5, { scope }, 'withMembers');
+  server.createList('group', 5, { scope: scopePojo }, 'withMembers');
   // Role
-  server.createList('role', 5, { scope }, 'withPrincipals');
+  server.createList('role', 5, { scope: scopePojo }, 'withPrincipals');
 
   // Other resources
-
-  server.db.scopes.where({type: 'project'}).forEach(({ id, type }) => {
-    const scope = { id, type };
-    server.createList('host-catalog', 2, { scope }, 'withChildren');
+  server.schema.scopes.where({type: 'project'}).models.forEach(scope => {
+    const scopePojo = { id: scope.id, type: scope.type };
+    server.createList('host-catalog', 2, { scope: scopePojo }, 'withChildren');
     server.createList('target', 2, { scope }, 'withRandomHostSets');
   });
 
diff --git a/ui/core/mirage/serializers/target.js b/ui/core/mirage/serializers/target.js
index c9c6935a0..8ced88cfc 100644
--- a/ui/core/mirage/serializers/target.js
+++ b/ui/core/mirage/serializers/target.js
@@ -10,6 +10,12 @@ export default ApplicationSerializer.extend({
     )}_ids`;
   },
 
+  keyForRelationshipId(relationshipName) {
+    return `${this._container.inflector.singularize(
+      underscore(relationshipName)
+    )}_id`;
+  },
+
   _hashForModel(model) {
     const json = ApplicationSerializer.prototype._hashForModel.apply(this, arguments);
     const { hostSets } = this.schema;
@@ -18,6 +24,10 @@ export default ApplicationSerializer.extend({
       const host_catalog_id = hostSet?.hostCatalog?.id;
       return { host_set_id, host_catalog_id };
     });
+    json.scope = {
+      id: model.scope.id,
+      type: model.scope.type
+    };
     return json;
   }