Years ago, one could use a window in Xcode to select an app being developed on an iPhone, and see the *.sqlite files that the app used for Core Data. One could copy those files back onto the Mac, and so preserve the current state of the app's data.
I've tried to get back to that window in the current Xcode, but with no joy. Can anyone give me a clue as to how to preserve a Core Data state for an iOS app?