Having run into this in the past, before I install a new version or update patch, I make a copy of tennis.ini and players.atp.ini. Then, after the installation, if the date is newer than my old one, I rename the new one (Just in case
), then rename the copy to replace it. That way it keeps any customizations I've made to the players.
Usually tennis.ini doesn't change, but a couple of times it has, and all my video settings were over-written, and I had to set up almost everything from scratch. Usually I compare the sections in the new to my original, and if there are other sections that have changed, I just copy and paste my 3D settings into the new one. That way I don't lose any of the new features that Manutoo has added to the game.
BTW, great game still