Okay, this note seems to address two different things.

1)
If you reverse a street in JOSM, it will offer to invert the "backward" or "forward" roles in cycle relations.  You should always say yes to that, and the cycle relations will be fine.

(On the other hand, JOSM offers to set oneway=–1, never let it do that, this is dirty. 😅)

2)
Changeset 147848284 comes from an armchair mapper who apparently only cares to make cycle routes continuous, no more.  I am not sure if I understand what the correct itinerary should be here but I encourage you to change it on the map if it is wrong.

(I don’t know if we have a real policy about those streets where M2 signs are expected to be here but are temporarily gone, but in most cases we treat them as normal streets with oneway:bicycle=no and cycle relations in both directions.)

I hope this helps.