Settlement procedure irregularity: procedural defects do not void settlements, but unpaid differences may prompt revocation. Settlement orders are not invalidated solely for procedural defects or committee constitution vacancies; however, the Board may revoke a settlement where the applicant fails to pay any difference due to discrepancy in arriving at the settlement terms. Applicants remain bound by waivers concerning limitation and laches and specified undertaking waivers. The Board's power to seek the difference includes recovery of profits gained or losses avoided out of the violations.