did you check that in person or did the Grundstücksbesitzer only told you that?
(I ask because I know this place and last time I was able to walk this way. This is also a way in official NRW-Vermessungskarte and there is a gate to national park so it seems to be legit. Sometimes, private owners do not want to see some ways in the map but we do not respond to such requests.)
=> if you were there and know the way is gone, I will remove it.
=> if you were not there, I will trust my old survey and leave the way as it is.