App Store submission blocked after Xcode 27 beta / macOS update

I am experiencing an App Store submission issue after updating my Mac development environment.

A build of my iOS app can be uploaded and appears in App Store Connect/TestFlight, but when I try to use the build for App Review, it is rejected because it was built using a beta version of Xcode.

I am currently using Xcode 27 beta because of the macOS environment installed on this Mac. I have been advised that I may need to return the Mac to a stable macOS/Xcode environment and rebuild the app.

This is particularly concerning because the app and its development data already exist on this Mac, and reverting the development environment may require a full backup and OS reinstallation.

I would like to know:

1. What is the officially supported procedure to return to a stable macOS and Xcode environment without losing development data?
2. Which stable Xcode version should be used to rebuild the app for App Store submission?
3. Is there any supported way to submit the existing build, or must it be rebuilt completely with a non-beta Xcode?

I would also like to know whether other developers using the current beta environment are experiencing the same App Store Connect submission restriction. I would also like clarification regarding responsibility and remediation in this situation.

If a development environment provided through Apple’s software update or beta distribution results in an existing application becoming unable to be submitted to App Store Connect, what responsibility does Apple assume for the resulting disruption to developers?

In particular, if resolving the issue requires backing up development data, reinstalling macOS, reinstalling Xcode, and rebuilding the application, does Apple provide an official recovery procedure or support for developers affected by this situation?

I believe this is important not only for my application, but also for other developers who may encounter the same issue.

I would appreciate an official clarification from Apple regarding both the technical solution and Apple’s policy for developers affected by this problem. Thank you.