To answer Collin, neither the Byzantine Catholic "Patriarchate" , nor the SSPX Society in Ukraine, is made up of dissident Orthodox. There was s bishop of the Kyivan Patriarchate who joined the Sedavacantists, but this was completely independent of the Byzantine "Patriarchate". He was received by Bishop Privarunas, in Germany, I think. His name was Yury Yurchik. I don't know what became of him.