Notwithstanding any repeal effected by the 1973 Act, provision may be made by regulations for continuing in force, with or without prescribed modifications, such provisions of the 1966 Act or any other enactments specified in the third column of Schedule 28 to the 1973 Act (repeals) as the Department considers appropriate for the purpose of preserving rights to benefit under that Act or those enactments in those cases (if any) in which in its opinion adequate alternative rights to benefit under the Contributions and Benefits Act are not conferred in pursuance of paragraph 12 above, or for temporarily retaining the effect of those provisions for transitional purposes.