It's a "ship of Theseus" problem if you replace parts of the brain. It's a subjective experience/continuity of qualia problem if you make a copy of a "self". It

It's a "ship of Theseus" problem if you replace parts of the brain. It's a subjective experience/continuity of qualia problem if you make a copy of a "self". It's no problem if you disregard self as an illusion.