After taking these kind of important decisions without any notice likerworld team has given so many reasons to not trust on their project If they have really done that. You must try to contact the team through their reasonable sources as much as possible maybe they could give you some concession regarding this if they're not scammers.
They are scammers from the start, I have followed their campaign, they are not communicating with bounty hunters and investors, they have an independent manager to do that for them via an announcement, please don't have a second thought that they are not scammers try to visit their channel and you'll see two months and there is not one single update.
so they are already transparent a long time ago that they are showing to be scammers on the loose. a sincere project will inform all their stakeholders for what's going to happen on their project. if they are not honest about it and you just found out they changed their contract address without informing their investors or holders, then that's really big red flag. if they did that, the old tokens will be useless and can't be traded in the exchanges. it would be hard for all those old token holders to chase these new owners. unless, they have good agreement with the previous owners to take care of those old contract address and just do the swap but seems in this case, is bit hopeless.