Hi,

by a (fairly long) process of trials and errors we have collectively determined that the only way to manage routes with "leaves and stems" (that is, which double back on themselves) is to rely on relation ordering and to have every way present as many times as necessary in the relation. This defeats automated ordering algorithms, including the (fairly recent) one from iD. Currently when I need to modify the corresponding parts of Chemin des Douaniers, particularly this one, I switch to JOSM, use its relation editor, ignore its warnings about multiple members, and rely on its vertical black line (and red dots for interruptions) at the right of the list of members.

We have two main ways of monitoring the continuity of routes: Knooppuntnet Monitor and, more recently, the route inspector in Waymarkedtrails.

Cheers,

St.