Dancing Hoskuld
Deity
I was trying to tell you that the Future Era techs bleeding over must be a result of bad code for that option so the option must be turned off and it will probably solve itself. You can do that from the world builder. Having played AND with the option on would've invited it to be on when it shouldn't have been possible to turn it on here since the options weren't cleared by starting a Play Now game just to clear it before starting the 'real' game.
They, hidden options, should be being cleared, set to default, no matter where you come from no. I put Platyping's code in that does all that.