Is Cocos2DX C++ framework dead?

Just want to ask, is it necessary to rewrite the current cocos2dx game to use Cocos Creator? Or it is ok to just keep using cocos2dx for old projects?

Old projects can continue without upgrading

Would be a lot of work to move a cocos2dx project to cocos creator project from my understanding. Has anyone successfully done so and can provide their feedback?

Don’t upgrade old projects to Creator. 2d-x has stopped maintenance since 2016, it is recommended to use Creator for new projects, and there is no need to upgrade old projects.