I heard that in the time of the Baal Shem Tov a certain reincarnated soul came to him¹⁷ that had belonged to a great man in the time of the Arizal. He had been waiting all that time for the Baal Shem Tov to come and fix his soul, for he was unable to go to the Tzaddikim of the previous generations. [Heaven] did not allow him, until the time of the Baal Shem Tov. Tiferes Shlomo, Shabbos Chanukah

footnotes: ¹⁷ The soul seems to have been incarnated in a body, although it is possible that the person himself did not understand the extent of the repair that the Baal Shem Tov accomplished by working with him.