Investigation is a different thing, rape centres are not for investigating but for medical, legal and rehabilitative services to victims of sexual assaults.
Including collecting forensic evidence, which will be passed to the police to investigate, just as you have to make pics of find wittnesses in a car crash as evidence. So it's part of the process that these centers should ease, since a normal police station can't do it and the victims would need to go from hospitals to police stations and other authorities to file a case, which logically is even more difficult, if the next center is several hours away.
So by making it more difficult to file the cases, you only try to reduce the number of collected cases and that in a country where the large majority of such cases are not filed anyway. But recent statements of politicans were pretty clear, when there is more worry about tourism going down if foreigners know more about these cases and the actual number would be more credibily accounted, than about the victims.
Last year the government pushed this huge number of centers to show their commitment to women safty and this year they shlashing it in the same manner, it's not even a compromise by saying we start with half or so, but a cut back that basically makes the whole approach worthless.