Doubt related to updating APK on play console

Hi everyone,

I have a pixel coloring game on play console. But because of my foolish planning,in the newer version of the game, current users will lose all progress they have made in the game (Actually I rewrote the app & now it is incompatible with the save files made with older version). And I will surely be subjected to bad reviews because of this

Is there any way I can release an update of the game where new users will get to see newer version whereas current users will never get to know about new version of the game?

Thanks in advance

(BTW does anyone knows what happened to email notification button?)

I don't think that's possible. Maybe you can attempt to add some compatibility in the new app? How did you create the old savefiles? Surely there should be a way to detect the old savefile in the new version of the app and have it load in some way.