Well, provide a complete, fitting and working savegame which can be downloaded, so why would one want to load an old save that's explicitly not supported and not just take the one that's there?
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Belnick:
All that rather simply happened because too many users did stupid stuff. Many used the console a few versions back, causing multiple game breaking bugs if they didn't know which things not to do and then complained. So they disabled the console. People didn't stop using old saves, even though they are explicitly not supported, so now they made it impossible to use them. It's simply there to stop people who have no clue what they are doing from doing stupid things and then complain about it. Especially since the game has its own cheat mode and since they actually provide working saves themselves now.
