id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
6567	split way: Option to decide which part will keep original id (WAS: Undesired route continuation)	ghia	team	"JOSM has a feature that when a new route is started at a point with other roads already connected, it will continue a single road ending in that point.
In favour of this behaviour is the ease of copying the probably similar tags to the continuing road.
However there are a lot of serious side effects.
- The relations which are copied, can form a tail.
Also when a backward route is continued and afterwards splitted, the original history of a road switches sides and become history of a total unrelated part of the road.
http://www.openstreetmap.org/browse/way/82861117/history
http://www.openstreetmap.org/browse/way/98440181
This is completely defeating the Wiki character of OSM, because the history is disguised in other parts.
Also not attributing the historic part of a road is the way JOSM operates for splits of a road.
When you have a road with 10 points from A to J and jou split at I then you have a road with 9 points that has the history and one small  new two points road.
When you split at B, you get a small road with the existing number and a large 9 points road which is new and this does unjustice of the original contributor and the Wiki.
Assumed previously is that the road points forward from A to J. With pointing backwards, from J to A, the effects are the same, but now for the other cases. 
JOSM should check for the part with the most points and keep that as original and give the new id to the smallest part.
For the road continuation, JOSM should only connect the new way to an old after confirmation by the user. It should also provide a list with elements (tags, relations  ) so the user is aware about the consequences.
Other useful thing would be a similar tool like a colour pipet in graphic editors.
It allows to copy all tags of a road segment to another.
"	enhancement	closed	normal		Core		wontfix	split way id