In a nutshell, a "continuing" sovereign parliament can do anything, enact any law, except ones that would limit its own sovereignty; a "self-embracing" sovereign parliament has, in theory, a carte blanche to reorganise the parliament, change the way we make laws and regulations, alter the course of legislation, etc.
Obviously, there are huge issues with having a self-embracing parliament, which is why it is more common, at least in English jurisprudence, to look towards a continuing parliament.