If you plan something like this, tell your fanbase beforehand, because that's just BS, IMO, and simply rude. You're actively destroying the player expierence with this, and therefor lose the player. Even if this is temporary, who tells me, you won't pull something like this again? I did invest days on my save over the course of the dev cycle and you just throw is away. Sorry, but for this, you and your game earned yourself a permanent ignore. I will also make people, who ask me about your game, actively aware about this and recommend them to not waste their time and possibly even money on you.