Bar of proceedings under Bombay or Central Act

If any proceeding in respect of any matter falling within the purview of this Act is instituted under this Act, then no proceeding shall at any time be entertained by any authority in respect of that matter under the Central Act or, as the case may be, the Bombay Act; and if any proceeding in respect of any matter within the purview of this Act is instituted under the Central Act, or as the case may be, the Bombay Act, then no proceeding shall at any time be entertained by the Industrial or Labour Court under this Act.