Amendment & Miscellaneous
(1) Sitting High Court judges in each Province became judges of the corresponding State's High Court (unless they chose otherwise), with Article 221 salary/benefits, and could be appointed Chief Justice of that or another High Court even if not an Indian citizen. (2) Similarly, judges of former princely-state High Courts became judges of the corresponding new State's High Court, continuing until a President-determined period expires. (3) "Judge" here excludes acting/additional judges.
This mirrors Article 374 (Federal Court/Supreme Court transition) for the High Court level - ensuring sitting High Court judges across British India's provinces and former princely states smoothly transitioned into the new State High Courts, with a specific accommodation allowing non-citizen judges (relevant given some judges at the time may not yet have held Indian citizenship) to continue serving, even as Chief Justice.
This is why judges sitting on provincial High Courts in 1950 simply continued as judges of the corresponding new State's High Court, without needing fresh appointment under the new Constitution's ordinary Article 217 process.