If an individual/company was carrying on management functions for a former local company, is the person considered the registered agent for the company?

No. The concept of registered agent was not recognised under the old CAP Companies Act, therefore, the company does not have a registered agent until one is appointed. (Paragraph 46 Schedule 2, Part VI of the BVI Business Companies Act, Transitional Provisions.). However, the registered office previously held will continue to be recognised until a change in registered office is filed.