The sadducees reinvented themselves and perverted the temple rites to match their situation. That's why the current understanding of the temple does not match historical and archaeological records. In short, the jews lied about stuff because it was convenient.
I think both of the Pharisees and Sadducees were destroyed, a few might have survived and had their practices co-opted and warped by the Gnostic Sects existing at the time, because even the Pharisees and Saducees would find Talmudism disgusting and abominable.