Facts/Background:

• The Appellant was M/s Shree Vishnu Constructions, a construction company that performed contractual work, including alterations and repairs at military installations.
• The Respondents were the Engineer in Chief Military Engineering Service and ors.
• The Appellant executed a contract for alterations to the Senior Non-Commissioned Officers mess and other repairs at the Air Force Academy, Hyderabad. After receiving payment for the final bill on 29.04.2013 and issuing a "no further claim" certificate, the Appellant invoked the arbitration clause on 20.12.2013, alleging disputes over the settlement.
• The Appellant filed an application under Section 11(6) of the Arbitration and Conciliation Act, 1996, before the Telangana High Court on 27.04.2016, seeking the appointment of an arbitrator.
• The High Court dismissed the application, citing "accord and satisfaction" due to the Appellant's acceptance of the final settlement and issuance of a "no further claim" certificate. It also held that the Arbitration and Conciliation (Amendment) Act, 2015 was inapplicable as proceedings were invoked earlier.
• Aggrieved by the High Court's decision, the appeal was raised before the present court.
  

Main Issue:

• Whether, in arbitration proceedings where the notice invoking arbitration was issued before the Amendment Act, 2015, the pre-Amendment Act or the Amendment Act, 2015 would be applicable? (Paragraph 6)