From Dietikon to Neuenhof near Baden there are now two cycling routes Rcn 66 on OSM. I can only confirm that the new one following the river Limmat is the officially sign posted cycling path.
However, I can not confirm that the signs for the former route through Dietikon, Spreitenbach, Killwangen and Neuenhof have been removed.

Auf OpenCycle Map vom15.Nov.13 hat die D035 mit der D32 keine Verbindung.