Closed Roads not recognised (HERE, TomTom) in Montenegro

[Jem Cotton]

Hi. I've got a route planned which takes me from the Durmitor National Park in Montenegro to the border crossing into Albania at Vermosh. On MyRouteApp using the HERE routing, the indicated route follows the 'P4' road with no issues.

However, I recently saw a post from another traveller on Facebook querying if this road is closed, as Google Maps shows it as impassable. Various replies from in-country said that the road is indeed currently closed and will likely be for the whole of the summer, due to a massive rockfall.

I checked on Google - and between Dobrilovina and Gojakovići on the P4, there is indeed a no-go symbol indicating that the road is closed.

I then checked back on MRA - using HERE and TomTom everything appears fine. Using OpenStreetMap, a big detour is shown, but with no explanation.

I would have expected MRA to have picked up on this closure, and am surprised that I'm now having to check my routes using Google Maps just in case.

Am I doing something wrong ? Have I missed a setting that would show the road closure.

Thanks in advance for any advice ...

Regards Jem