Hi again, just wanted to give an update since I was asking about this a while ago and finally got a chance to test things out myself.
Today I created a new internal test track in Google Play and updated my game from APK to AAB following the guide, enabling google play app signing and uploading the two files, and upon updating my game with the internal test I’ve found that it has in fact deleted the saved game data. Everything was done with Google Play’s tools, meaning, I originally downloaded the release version of the game (the APK) off google play as a tester and then updated that with the internal test.
I’m not sure if I’m doing something wrong or if it’s just an actual problem with updating from APK to AAB
edit: for more context, I have updated my game several times already as an APK on google play and it’s never been a problem. If I re-d/l the old version of my game, the old data actually comes back, and if I download the new version again, it switches back to the save from the new version. I’ve made no changes to my code between these versions. Updating my game manually with a new APK also gets rid of the old saved data. It’s very strange.