The interim order made by the Magistrate's Court at Kaikohe on 4 November 1965 on the application of Terence Richard Slack and Margaret Ann Slack to adopt the child thereby renamed Michael William Slack shall operate and for all purposes be deemed always to have operated as a final order of adoption; and it is hereby declared that the legal effects and incidents of such order shall be the same as if the Magistrate's Court at Kaikohe had on 4 November 1965 made a final order of adoption in favour of the said Terence Richard Slack and Margaret Ann Slack in respect of the child known as the result of such order as Michael William Slack.