diff --git a/docs/gh-pages/src/api/cm4all-wp-impex-oas.json b/docs/gh-pages/src/api/cm4all-wp-impex-oas.json
diff --git a/docs/gh-pages/src/api/cm4all-wp-impex-oas.md b/docs/gh-pages/src/api/cm4all-wp-impex-oas.md
diff --git a/docs/gh-pages/src/api/index.md b/docs/gh-pages/src/api/index.md
@@ -6,7 +6,9 @@
 
 All ImpEx features are exposed by it's WordPress REST API endpoint.
 
-The REST API is available at `/wp-json/cm4all-wp-impex/v1/`.
+See [ImpEx REST API documentation](./cm4all-wp-impex-oas.md).
+
+The REST API is also available as [OpenAPI Specification Format](https://swagger.io/specification/v2/) : Download [ImpEx OpenAPI Specification](http://0.0.0.0:3000/api/cm4all-wp-impex-oas.json) here.
 
 You can explore the ImpEx Rest API using any HTTP Rest API Client.
 

diff --git a/docs/gh-pages/src/api/swagger-api.md b/docs/gh-pages/src/api/swagger-api.md
diff --git a/docs/gh-pages/src/basic-usage.md b/docs/gh-pages/src/basic-usage.md
@@ -0,0 +1,25 @@
+<!-- toc -->
+
+# Basic usage
+
+ImpEx separates Import and Export in 2 steps using the ImpEx Dashboard screen.
+
+![ImpEx Dashboard screen](./impex-screenshot.png)
+
+## Export
+
+- You need to create a snapshot first.
+
+  The snapshot will contain the current data (defined by the used [ImpEx profile](explanation-of-terms.html#profile)) of the WordPress instance.
+
+- Now you can download the snapshot to your local machine.
+
+## Import
+
+- Upload snapshot from your local machine to the WordPress instance.
+
+  Uploading does not modify your current WordPress contents.
+
+- If you now import the snapshot, the contents of your WordPress instance will be updated with the snapshot data.
+
+> Using the [impex-cli](./impex-cli.html) command line tool will combine both steps in one. You just export or import a local directory containing the snapshot in [ImpEx Export Format](./migrating-content.html#preparation). [impex-cli](./impex-cli.html) manages the temporary snapshot handling for you.
diff --git a/docs/gh-pages/src/explanation-of-terms.md b/docs/gh-pages/src/explanation-of-terms.md
@@ -10,6 +10,18 @@ This page will clarify their meaning.
 
 The name of the plugin stands for **Imp**ort / **Ex**port => in short **ImpEx**.
 
+## Snapshot
+
+A snapshot is a copy of the content to be imported/exported.
+
+It resides in a separate WordPress database table managed by the ImpEx plugin.
+
+> Attachments/media will be saved in a private sub-directory of the WordPress uploads folder.
+
+You can imagine a snapshot like a server side copy of the content.
+
+You can import / export as many snapshots as you want.
+
 ## Provider
 
 Provider handle content for ImpEx. They are used to load (import) or extract (export) data for ImpEx.

diff --git a/docs/gh-pages/src/impex-cli.md b/docs/gh-pages/src/impex-cli.md
@@ -259,20 +259,17 @@ Example usage:
 impex-cli.php import \
   -username=<adminuser> -password='<password>' \
   -rest-url=http://localhost:8888/wp-json \
-  -profile=all \
   ~/tmp/my-export
 ```
 
 This snippet will upload the whole exported data in the directory and imports them using the `all` profile at the WordPress installation.
 
 #### `profile` option
 
-An ImpEx import profile defines what data should be imported.
+An ImpEx import profile defines what data should be imported. If not provided, the import will fallback to default import profile `all`.
 
 > To get a list of available ImpEx import profiles see impex-cli operation [`import-profiles`](#export-profiles)
 
-You will usually use the predefined `all` import profile.
-
 #### `directory` argument
 
 The `directory` argument specifies the directory where the import data resides.

diff --git a/impex-cli/impex-cli.php b/impex-cli/impex-cli.php
@@ -214,7 +214,7 @@ function help($options, $message = null, ...$args)
 
   import                                                import wordpress data exported by impex from a directory 
     options:
-      -profile=[export-profile]                         (required) export profile to use
+      -profile=[import-profile]                         (default='all') export profile to use
     arguments:
       [directory]                                       (required) impex export directory to import from
 
@@ -343,10 +343,10 @@ function sanitizeFilename($string, $force_lowercase = true, $anal = false)
 
 function import($options, $import_directory, ...$args)
 {
-  $profile = $options['profile'] ?? null;
-  if (!$profile) {
-    _die($options, "Import failed: missing option 'profile'");
-  }
+  $profile = $options['profile'] ?? 'all';
+  // if (!$profile) {
+  //   _die($options, "Import failed: missing option 'profile'");
+  // }
 
   [$profiles] = import_profile($options, 'list');
   $profiles = array_column($profiles, 'name');

diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cm4all-wp-impex",
-  "version": "1.3.4",
+  "version": "1.3.5",
   "scripts": {
     "dev": "make dev",
     "build": "make",

diff --git a/packages/@cm4all-wp-impex/generator/README.md b/packages/@cm4all-wp-impex/generator/README.md
@@ -4,10 +4,10 @@ This package provides a foundation of JavaScript functions/classes for transform
 
 The framework does not require a WordPress instance. It rather offers an extensible platform for generating WordPress content consumable by the [ImpEx WordPress plugin](https://github.com/IONOS-WordPress/cm4all-wp-impex).
 
-> [ImpEx WordPress plugin](https://github.com/IONOS-WordPress/cm4all-wp-impex) is a Open Source WordPress plugin for importing / exporting WordPress data.
+> [ImpEx](https://github.com/IONOS-WordPress/cm4all-wp-impex) is a [Open Source WordPress plugin for importing / exporting WordPress data](https://github.com/IONOS-WordPress/cm4all-wp-impex).
 > _[`@cm4all-wp-impex/generator`](https://www.npmjs.com/@cm4all-wp-impex/generator) is part of the [ImpEx WordPress plugin](https://github.com/IONOS-WordPress/cm4all-wp-impex) project._
 
-[Watch the tutorial on YouTube](https://img.youtube.com/vi/pjG69RmULYo/2.jpg):
+[Watch the tutorial on YouTube](https://www.youtube.com/watch?v=pjG69RmULYo):
 
 [![Watch the video](https://img.youtube.com/vi/pjG69RmULYo/2.jpg)](https://www.youtube.com/watch?v=pjG69RmULYo)
 
@@ -23,7 +23,7 @@ The [ImpEx WordPress plugin](https://github.com/IONOS-WordPress/cm4all-wp-impex)
 
 - functions to [create file/folder structure expected](https://ionos-wordpress.github.io/cm4all-wp-impex/migrating-content.html) by the [ImpEx WordPress plugin](https://github.com/IONOS-WordPress/cm4all-wp-impex)
 
-Last but not least [`@cm4all-wp-impex/generator`](https://www.npmjs.com/@cm4all-wp-impex/generator) includes a [full featured example transforming a complete static website into a WordPress content](https://github.com/IONOS-WordPress/cm4all-wp-impex/tree/develop/packages/%40cm4all-wp-impex/generator/examples/impex-complete-static-homepage-conversion) consumable by [ImpEx WordPress plugin](https://github.com/IONOS-WordPress/cm4all-wp-impex). The [example](https://github.com/IONOS-WordPress/cm4all-wp-impex/tree/develop/packages/%40cm4all-wp-impex/generator/examples/impex-complete-static-homepage-conversion) is the perfect starting point for creating your own WordPress content generator.
+Last but not least [`@cm4all-wp-impex/generator`](https://www.npmjs.com/@cm4all-wp-impex/generator) includes a [full featured example transforming a complete static website into WordPress content](https://github.com/IONOS-WordPress/cm4all-wp-impex/tree/develop/packages/%40cm4all-wp-impex/generator/examples/impex-complete-static-homepage-conversion) consumable by [ImpEx WordPress plugin](https://github.com/IONOS-WordPress/cm4all-wp-impex). The [example](https://github.com/IONOS-WordPress/cm4all-wp-impex/tree/develop/packages/%40cm4all-wp-impex/generator/examples/impex-complete-static-homepage-conversion) is the perfect starting point for creating your own WordPress content generator.
 
 # Installation
 

diff --git a/...wp-impex/generator/examples/impex-complete-static-homepage-conversion/README.md b/...wp-impex/generator/examples/impex-complete-static-homepage-conversion/README.md
@@ -31,16 +31,18 @@ The conversion process is implemented in a single file `./index.js` :
 
 The conversion process is implemented in less than 240 lines of code thanks to package [`@cm4all-wp-impex/generator`](https://www.npmjs.com/@cm4all-wp-impex/generator).
 
-You can run the conversion script by executing `./index.js`
+You can run the conversion script by executing `./index.js` (can be found at the GitHub repository : [packages/@cm4all-wp-impex/generator/examples/impex-complete-static-homepage-conversion\index.js](https://github.com/IONOS-WordPress/cm4all-wp-impex/blob/develop/packages/%40cm4all-wp-impex/generator/examples/impex-complete-static-homepage-conversion/index.js)
 
 > Ensure the right nodejs version is active before using `nvm install` and to install the required NodeJS dependencies using `npm ci`.
 
+> Ensure that you've installed the script dependencies by entering directory `cm4all-wp-impex/packages/@cm4all-wp-impex/generator` and executing `npm ci`.
+
 The result is a folder `generated-impex-import/` containing the generated [ImpEx export folder layout](https://ionos-wordpress.github.io/cm4all-wp-impex/migrating-content.html#preparation) containing the ImpEx slice JSON files and media files.
 
 This export can now be imported into WordPress using [ImpEx CLI](https://ionos-wordpress.github.io/cm4all-wp-impex/impex-cli.html) :
 
 ```sh
-impex-cli.php import -username=<adminusername> -password=<adminpassword> -rest-url=<your-wordpress-rest-api-endpoint> -profile=all ./generated-impex-export/
+impex-cli.php import -username=<adminusername> -password=<adminpassword> -rest-url=<your-wordpress-rest-api-endpoint> ./generated-impex-export/
 ```
 
 _(Replace the `<placeholder>` with your own values.)_

diff --git a/packages/@cm4all-wp-impex/generator/package.json b/packages/@cm4all-wp-impex/generator/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@cm4all-wp-impex/generator",
-  "version": "1.3.4",
-  "description": "Foundation for transforming any data to Gutenberg block annotated WordPress content into WordPress ImpEx plugin (https://github.com/IONOS-WordPress/cm4all-wp-impex) export format",
+  "version": "1.3.5",
+  "description": "Transforming any data to Gutenberg block annotated WordPress content by generating WordPress ImpEx plugin (https://github.com/IONOS-WordPress/cm4all-wp-impex) files",
   "keywords": [
     "cm4all-wp-impex",
     "transform",
@@ -23,7 +23,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/IONOS-WordPress/cm4all-wp-impex/tree/develop/packages/%40cm4all-wp-impex/generator"
+    "url": "https://github.com/IONOS-WordPress/cm4all-wp-impex.git"
   },
   "author": {
     "name": "Lars Gersmann",

diff --git a/plugins/cm4all-wp-impex-example/plugin.php b/plugins/cm4all-wp-impex-example/plugin.php
@@ -4,11 +4,11 @@
  * Plugin Name: cm4all-wp-impex-example
  * Plugin URI: http://dev.intern.cm-ag/trinity/research/cm4all-wp-impex
  * Description: Example plugin contributing additional Importer/Exporter facilities to ImpEx plugin 
- * Version: 1.3.4
+ * Version: 1.3.5
  * Tags: import, export, migration
  * Requires PHP: 8.0
  * Requires at least: 5.7
- * Tested up to: 5.9
+ * Tested up to: 6.0
  * Author: Lars Gersmann, CM4all
  * Author URI: https://cm4all.com
  * Domain Path: /languages

diff --git a/plugins/cm4all-wp-impex/plugin.php b/plugins/cm4all-wp-impex/plugin.php
@@ -4,11 +4,11 @@
  * Plugin Name: cm4all-wp-impex
  * Plugin URI: https://github.com/IONOS-WordPress/cm4all-wp-impex
  * Description: ImpEx contributes extendable Import / Export functionality to WordPress
- * Version: 1.3.4
+ * Version: 1.3.5
  * Tags: import, export, migration
  * Requires PHP: 8.0
  * Requires at least: 5.7
- * Tested up to: 5.9
+ * Tested up to: 6.0
  * Author: Lars Gersmann, CM4all
  * Author URI: https://cm4all.com
  * Domain Path: /languages

diff --git a/rector.php b/rector.php
@@ -2,35 +2,23 @@
 
 declare(strict_types=1);
 
+use Rector\Config\RectorConfig;
 use Rector\Core\Configuration\Option;
-use Rector\Php74\Rector\Property\TypedPropertyRector;
-use Rector\Set\ValueObject\LevelSetList;
 use Rector\Core\ValueObject\PhpVersion;
 use Rector\Set\ValueObject\DowngradeSetList;
-use Rector\Set\ValueObject\SetList;
 use Rector\Set\ValueObject\DowngradeLevelSetList;
-use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
-use Rector\DowngradePhp80\Rector\MethodCall\DowngradeNamedArgumentRector;
 
-return static function (ContainerConfigurator $containerConfigurator): void {
+return static function (RectorConfig $rectorConfig): void {
   // get parameters
-  $parameters = $containerConfigurator->parameters();
+  $parameters = $rectorConfig->parameters();
   $parameters->set(Option::PATHS, [
     __DIR__ . '/dist/cm4all-wp-impex-php7.4.0'
   ]);
+  $parameters->set(Option::PARALLEL, false);
 
   $parameters->set(Option::PHP_VERSION_FEATURES, PhpVersion::PHP_80);
 
   // Define what rule sets will be applied
-  // $containerConfigurator->import(SetList::CODE_QUALITY);
-  $containerConfigurator->import(DowngradeLevelSetList::DOWN_TO_PHP_80);
-  $containerConfigurator->import(DowngradeSetList::PHP_80);
-
-  // get services (needed for register a single rule)
-  //$services = $containerConfigurator->services();
-  //$services->set(DowngradeNamedArgumentRector::class);
-
-
-  // register a single rule
-  // $services->set(TypedPropertyRector::class);
+  $rectorConfig->import(DowngradeLevelSetList::DOWN_TO_PHP_80);
+  $rectorConfig->import(DowngradeSetList::PHP_80);
 };