Hi datendelphin. Thank you for your clarification. Now I understand.

I have used the Schweiz Mobil map to verify my personal observations in order to double check my findings.
OSM does not regard the maps (http://map.veloland.ch/?lang=de&route=all) as legal source. In deed, this organisation does not create routes. However, they collect the data submitted by the various official cantonal authorities responsible for cycling paths. The federalistic system of Switzerland does not have a national authority.
Hence, it is worthwhile to double check observations with the Swiss Mobil maps.