diff --git a/docs/src/test-api/class-testconfig.md b/docs/src/test-api/class-testconfig.md
index eaac181dbe..7eace0f88a 100644
--- a/docs/src/test-api/class-testconfig.md
+++ b/docs/src/test-api/class-testconfig.md
@@ -84,12 +84,6 @@ const config: PlaywrightTestConfig = {
 export default config;
 ```
 
-## property: TestConfig.configFile
-* since: v1.27
-- type: ?<[string]>
-
-Path to config file, if any.
-
 ## property: TestConfig.forbidOnly
 * since: v1.10
 - type: ?<[boolean]>
@@ -232,17 +226,6 @@ Filter to only run tests with a title **not** matching one of the patterns. This
 
 `grepInvert` option is also useful for [tagging tests](../test-annotations.md#tag-tests).
 
-## property: TestConfig.groups
-* since: v1.27
-- type: ?<[Object]<[string],[Array]<[string]|[Array]<[string]|[Object]>>>>
-  - `project` <[string]|[Array]<[string]>> Project name(s).
-  - `grep` ?<[RegExp]|[Array]<[RegExp]>> Filter to only run tests with a title matching one of the patterns.
-  - `grepInvert` ?<[RegExp]|[Array]<[RegExp]>> Filter to only run tests with a title **not** matching one of the patterns.
-  - `testMatch` ?<[string]|[RegExp]|[Array]<[string]|[RegExp]>> Only the files matching one of these patterns are executed as test files. Matching is performed against the absolute file path. Strings are treated as glob patterns.
-  - `testIgnore` ?<[string]|[RegExp]|[Array]<[string]|[RegExp]>> Files matching one of these patterns are not executed as test files. Matching is performed against the absolute file path. Strings are treated as glob patterns.
-
-Project groups that control project execution order.
-
 ## property: TestConfig.ignoreSnapshots
 * since: v1.26
 - type: ?<[boolean]>
diff --git a/packages/playwright-test/src/loader.ts b/packages/playwright-test/src/loader.ts
index 69de3509e5..6d3faebab9 100644
--- a/packages/playwright-test/src/loader.ts
+++ b/packages/playwright-test/src/loader.ts
@@ -165,7 +165,10 @@ export class Loader {
     this._fullConfig.metadata = takeFirst(config.metadata, baseFullConfig.metadata);
     this._fullConfig.projects = (config.projects || [config]).map(p => this._resolveProject(config, this._fullConfig, p, throwawayArtifactsPath));
     this._assignUniqueProjectIds(this._fullConfig.projects);
-    this._fullConfig.groups = config.groups;
+
+    // TODO: restore or remove once groups are decided upon.
+    this._fullConfig.groups = (config as any).groups;
+    validateProjectGroups(this._configFile || '<default config>', this._fullConfig);
   }
 
   private _assignUniqueProjectIds(projects: FullProjectInternal[]) {
@@ -533,8 +536,6 @@ function validateConfig(file: string, config: Config) {
     });
   }
 
-  validateProjectGroups(file, config);
-
   if ('quiet' in config && config.quiet !== undefined) {
     if (typeof config.quiet !== 'boolean')
       throw errorWithFile(file, `config.quiet must be a boolean`);
@@ -641,7 +642,7 @@ function validateProject(file: string, project: Project, title: string) {
   }
 }
 
-function validateProjectGroups(file: string, config: Config) {
+function validateProjectGroups(file: string, config: FullConfigInternal) {
   if (config.groups === undefined)
     return;
   const projectNames = new Set(config.projects?.filter(p => !!p.name).map(p => p.name));
diff --git a/packages/playwright-test/types/test.d.ts b/packages/playwright-test/types/test.d.ts
index 84853d1c92..108c3a205f 100644
--- a/packages/playwright-test/types/test.d.ts
+++ b/packages/playwright-test/types/test.d.ts
@@ -578,11 +578,6 @@ interface TestConfig {
     };
   };
 
-  /**
-   * Path to config file, if any.
-   */
-  configFile?: string;
-
   /**
    * Whether to exit with an error if any tests or groups are marked as
    * [test.only(title, testFunction)](https://playwright.dev/docs/api/class-test#test-only) or
@@ -683,38 +678,6 @@ interface TestConfig {
    */
   grepInvert?: RegExp|Array<RegExp>;
 
-  /**
-   * Project groups that control project execution order.
-   */
-  groups?: { [key: string]: Array<string|Array<string|{
-    /**
-     * Project name(s).
-     */
-    project: string|Array<string>;
-
-    /**
-     * Filter to only run tests with a title matching one of the patterns.
-     */
-    grep?: RegExp|Array<RegExp>;
-
-    /**
-     * Filter to only run tests with a title **not** matching one of the patterns.
-     */
-    grepInvert?: RegExp|Array<RegExp>;
-
-    /**
-     * Only the files matching one of these patterns are executed as test files. Matching is performed against the absolute
-     * file path. Strings are treated as glob patterns.
-     */
-    testMatch?: string|RegExp|Array<string|RegExp>;
-
-    /**
-     * Files matching one of these patterns are not executed as test files. Matching is performed against the absolute file
-     * path. Strings are treated as glob patterns.
-     */
-    testIgnore?: string|RegExp|Array<string|RegExp>;
-  }>>; };
-
   /**
    * Whether to skip snapshot expectations, such as `expect(value).toMatchSnapshot()` and `await
    * expect(page).toHaveScreenshot()`.
@@ -1337,9 +1300,6 @@ export interface FullConfig<TestArgs = {}, WorkerArgs = {}> {
    *
    */
   webServer: TestConfigWebServer | null;
-  /**
-   * Path to config file, if any.
-   */
   configFile?: string;
 }
 
diff --git a/utils/generate_types/index.js b/utils/generate_types/index.js
index 00af2ed13c..1ba526933a 100644
--- a/utils/generate_types/index.js
+++ b/utils/generate_types/index.js
@@ -573,6 +573,7 @@ class TypesGenerator {
         ['PlaywrightTestArgs', 'Fixtures'],
       ]),
       ignoreMissing: new Set([
+        'FullConfig.configFile',
         'FullConfig.version',
         'FullConfig.rootDir',
         'SuiteFunction',