Boundless 1.0 - we will reset all worlds when Boundless 1.0 is released. This means that all players on PC and PS4 will experience the official launch of Boundless and it’s universe together. Anything created or earned before in the pre-1.0 universes can not be migrated into the 1.0 universe.
Additional: In response to @Jenndragonfly - we will not delete any worlds but simply take them offline. Hopefully in the future and if there is demand we will allow the worlds to be downloaded.