The behaviour Im seeing is:
If you use "dont keep activities" the memory of the activity will always be destroyed and it will be recreated from scratch with the data from the
Yes there is:
Just start your app, navigate to the activity you want to test and press the home button (important app needs to be in background). Then either with command line:
adb shell am kill your.app.package.name
Terminate Application in Android Studio in the Android Monitor:
then restart your app with e.g. the launcher icon and the activity will be recreated with a new application object.