Looks like the particle system for scenekit is not available as a template anymore in xcode 11. I can only see the SpriteKit version. Is this by design or a mistake, or is there another way to create one?

My app was recently transferred from account X to Y. We went through all of the documentation and it's gone ok bar one big issue. The app update that we last sent to Test Flight no longer has access to our apps App Group shared user defaults. It's been suggested to me to delete the app group id from the old account, and recreate it in our new account. I'd like to confirm a couple of points before I proceed. Will the production version of the app be affected if I delete the app group from the old account. After recreating the app group in the new account, will the data in shared user defaults become available again?