I hate to be boring by sticking to the point of this topic- which is about the claim that the south can now issue European arrest warrants against foreigners ‘unlawfully’ occupying former GC property in the north. I also hate to be boring by pointing out that they can't. I do not know whether the politicians who passed this amendment have actually bothered to read the relevant EU law but the upshot is that it gives them no such power.
Under Article 2(2) mandatory arrest warrants can only be issued and executed in respect of the crimes specifically listed — terrorism, drug trafficking, arson and so forth — and living in a GC house ain't one of them (not surprisingly). Under Article 2(4) warrants can be issued for other crimes, but only if the other executing state recognises the same crime — no one else does. Under Article 4(7b) the crime which is the subject of the warrant must have taken place on the territory of the issuing state and be within the jurisdiction of the executing state — GC's may argue that the north is the same as the south, but the north is certainly not within the jurisdiction of any other country. Finally, and in any case, a warrant cannot be issued against any existing occupier for that is breach of Article 7 of the European Convention on Human Rights, which disallows respectively increasing penalties for a past offence (i.e. the date at which the alleged crime took place) so only future buyers are targets, or would be if it were not that for the other reasons given above, no warrant would be effective anyway. And if all that were not enough, the amendment is publicly stated to be aimed only at foreigners, which makes it discriminatory and therefore unenforceable on that ground alone. As I say, you wonder if these people read the laws they claim to be citing. Clearly, they don't. Sorry to interrupt, just thought I'd mention it.