diff --git a/packages/strapi-plugin-graphql/tests/graphql-connection.test.e2e.js b/packages/strapi-plugin-graphql/tests/graphql-connection.test.e2e.js
new file mode 100644
index 0000000000..1a02982ad3
--- /dev/null
+++ b/packages/strapi-plugin-graphql/tests/graphql-connection.test.e2e.js
@@ -0,0 +1,138 @@
+'use strict';
+
+// Helpers.
+const { createTestBuilder } = require('../../../test/helpers/builder');
+const { createStrapiInstance } = require('../../../test/helpers/strapi');
+const { createAuthRequest } = require('../../../test/helpers/request');
+
+const builder = createTestBuilder();
+let strapi;
+let rq;
+let graphqlQuery;
+
+const postModel = {
+  attributes: {
+    name: {
+      type: 'string',
+    },
+    rating: {
+      type: 'integer',
+    },
+  },
+  connection: 'default',
+  name: 'post',
+  description: '',
+  collectionName: '',
+};
+
+const postFixtures = [
+  {
+    name: 'post 1',
+    rating: 4,
+  },
+  {
+    name: 'post 2',
+    rating: 3,
+  },
+  {
+    name: 'post 3',
+    rating: 3,
+  },
+  {
+    name: 'post 4',
+    rating: 4,
+  },
+];
+
+describe('Test Graphql Connection', () => {
+  beforeAll(async () => {
+    await builder
+      .addContentType(postModel)
+      .addFixtures(postModel.name, postFixtures)
+      .build();
+
+    strapi = await createStrapiInstance();
+    rq = await createAuthRequest({ strapi });
+
+    graphqlQuery = body => {
+      return rq({
+        url: '/graphql',
+        method: 'POST',
+        body,
+      });
+    };
+  });
+
+  afterAll(async () => {
+    await strapi.destroy();
+    await builder.cleanup();
+  });
+
+  describe('Test values connection', () => {
+    test('List posts', async () => {
+      const res = await graphqlQuery({
+        query: /* GraphQL */ `
+          {
+            postsConnection {
+              values {
+                name
+                rating
+              }
+            }
+          }
+        `,
+      });
+
+      expect(res.statusCode).toBe(200);
+      expect(res.body.data.postsConnection.values.length).toBe(postFixtures.length);
+      expect(res.body.data.postsConnection.values).toEqual(expect.arrayContaining(postFixtures));
+    });
+
+    test('List posts with limit', async () => {
+      const res = await graphqlQuery({
+        query: /* GraphQL */ `
+          {
+            postsConnection(limit: 1) {
+              values {
+                name
+                rating
+              }
+            }
+          }
+        `,
+      });
+
+      expect(res.statusCode).toBe(200);
+      expect(res.body.data.postsConnection.values.length).toBe(1);
+    });
+  });
+
+  describe('Test groupBy', () => {
+    test('Groupby simple query', async () => {
+      const res = await graphqlQuery({
+        query: /* GraphQL */ `
+          {
+            postsConnection {
+              groupBy {
+                rating {
+                  key
+                }
+              }
+            }
+          }
+        `,
+      });
+
+      expect(res.statusCode).toBe(200);
+      expect(res.body.data.postsConnection.groupBy.rating.length).toBe(2);
+      expect(res.body.data.postsConnection.groupBy.rating).toEqual(
+        expect.arrayContaining([
+          {
+            key: 3,
+          },
+          { key: 4 },
+        ])
+      );
+    });
+  });
+});
diff --git a/packages/strapi-plugin-graphql/tests/graphqlCrud.test.e2e.js b/packages/strapi-plugin-graphql/tests/graphql-crud.test.e2e.js
similarity index 100%
rename from packages/strapi-plugin-graphql/tests/graphqlCrud.test.e2e.js
rename to packages/strapi-plugin-graphql/tests/graphql-crud.test.e2e.js
diff --git a/packages/strapi-plugin-graphql/tests/graphqlRelations.test.e2e.js b/packages/strapi-plugin-graphql/tests/graphql-relations.test.e2e.js
similarity index 100%
rename from packages/strapi-plugin-graphql/tests/graphqlRelations.test.e2e.js
rename to packages/strapi-plugin-graphql/tests/graphql-relations.test.e2e.js
diff --git a/packages/strapi-utils/lib/convert-rest-query-params.js b/packages/strapi-utils/lib/convert-rest-query-params.js
index f549df3dd6..6ef73209c4 100644
--- a/packages/strapi-utils/lib/convert-rest-query-params.js
+++ b/packages/strapi-utils/lib/convert-rest-query-params.js
@@ -74,7 +74,7 @@ const convertRestQueryParams = (params = {}, defaults = {}) => {
  */
 const convertExtraRootParams = params => {
   return Object.entries(params).reduce((acc, [key, value]) => {
-    if (_.startsWith(key, '_')) {
+    if (_.startsWith(key, '_') && !QUERY_OPERATORS.includes(key)) {
       acc[key.slice(1)] = value;
     } else {
       acc[key] = value;