The jurisdiction and powers which were vested in the county courts and the judges and officers thereof, respectively, on January 31, 1904, by the laws of this Commonwealth or under any will or other instrument of writing shall be vested in, exercised by and imposed upon the circuit courts and the judges and officers thereof, except when otherwise specially provided.

All such acts and proceedings of the circuit courts, judges and officers thereof, respectively, whether de jure or de facto officers, done or had since January 31, 1904, as may hereafter be done under this section, are hereby ratified and made valid.