[josm-dev] JOSM, the relation killer

[Frederik Ramm]

Hi,

    every now and then we have isolated reports about all members of a 
relation having accidentally been removed with JOSM.

Just recently, with JOSM 3097, someone made this changeset

http://www.openstreetmap.org/browse/changeset/4238359

in which this 2700 member relation

http://www.openstreetmap.org/browse/relation/18162

(which has meanwhile been deleted and re-created as #544296) was robbed 
of all its members; only the empty, tagged relation remained.

The user says that he had not changed the relation except removing a 
node from a way that was part of the relation; then, on upload, that 
edit produced a conflict which he resolved by saying that the deletion 
of the node can be ignored.

I don't have details but I have a feeling that some sort of conflict 
resolution was involved in most of these "help, JOSM has removed all 
members from the relation" problem.

I'll play around a bit on then dev API and see if I can reproduce the 
problem.

Bye
Frederik

-- 
Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"