We are trying to move our Apps to Adobe Launch, we followed the steps as per documentation and are not seeing data flow into analytics.
1. We created mobile property in the launch.
2. We added the Adobe Analytics extension, configured the tracking server.
3. Our App team updated the SDK and did some testing.
4. We are not seeing the data, not sure how to proceed or where to debug it.
Generally that is what happens with Launch already (without needing any rules since Launch for AA works a bit differently in mobile vs web).
Essentially in your AA extension, you specify the report suites where you want the data to be sent and in processing rules, you would see the context data in your dropdowns. Take a look at this link for a more pictorial walkthrough (thanks to Jan Exner).
It's difficult to say how to troubleshoot your issue without the details of your implementation. Here is a guide for how to implement SDK via Adobe Launch.