Hiking routes not up-to-date

The hiking route networks (regional + national) does not appear up-to-date.

I have experienced discrepancies between what is shown on ut.no / dnt.no compared to what is shown in OSM and the website tag is invalid(eg. Relation: ‪RYF8‬ (‪5573078‬) | OpenStreetMap referes to a route with reference RYF8 with the (invalid) website pointing to http://www2.turistforeningen.no/trail.php?tr_code=ryf8)

Does the RYF8 reference have any meaning anymore and do we have newer data we can use?

Example from Waymarked Trails below

These routes were originally mapped by user @Turleder_n. Maybe he knows?