Hello,
On a regular basis I have to write to some contributors that use
automatic methods to merge nodes in the US so I though I would copy my
message here so everyone is aware:
Please do not run automatic merge tools in the US. Doing this you will
connect entities that should not (e.g. river with road). This is due to
the source of the imports that have duplicate nodes for different type
of entities. If you want to fix duplicates in the US you need to review
your changes one by one.
Also to avoid such mistakes you can use the JOSM validator plugin that
sorts duplicates by type of ways i.e. highway duplicates, boundary
duplicates, waterway duplicates, powerline duplicates, ....
Thanks in advance,
N.
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