I don't know how you are working your game, but in my small prototype, im using a Singleton for my character's consistent data. Health, Item quantity, etc. There might be quite a few other ways. Somewhere i saw how to do this with more than one object by grouping nodes and something else but I don't remember. Im searching though lol.
Try with a singleton for now, not saying it's the correct way because I don't know what kind of game you're doing. But to instance all your objects to the new scene, i could say yes; by grouping them.