When they said the Red Star all those times in BIONICLE, they made an error.

They actually meant the Bread Star. Dead beings are made alive again, but in the form of bread. They are then sent back to the MU. But, because they're bread, they're almost immediately eaten by something or another.

In addition, instead of being populated by Kestora, it is populated by Osha-Matoran, Matoran of Safe Working Conditions.

There is also no such BIONICLE Stars combiner known as 'Gaardus'. They meant 'Gardens', of which the Bread Star has plenty, each one growing wheat for the bread.

After BIONICLE ended, Spherus Magna also exploded due to its melding being rushed by Mata Nui. Everyone died, basically. Permanently. Even Mata Nui and the people in other dimensions.