We have created a script to automatically migrate your existing Dynatrace permissions to the new services AppEngine and Grail. The script is provided as a Dynatrace Notebook and will run in your new AppEngine environment via the Notebook app.
The script is configured in such a way that it crawls your existing permissions for your users on tenant level, depending on the permission it assigns either the user or the admin permission for Grail and AppEngine. To download the script just click on the attached zip file of this forum post.
Feel free to use this thread to ask questions and get help about the script.