Section 9. Bar on re-opening of settled cases.

Subject to the provisions of sub-section (3) and sub-section (4) of section 8, a certificate of settlement issued under sub-section (1) of section 8 shall be conclusive as to the dispute to which it relates, and no matter covered by such certificate of settlement shall be re-opened in any proceeding of appeal or revision, or any other proceeding, under the relevant Act.