Josm: Split polygon function?

[Tordanik (Tobias Knerr)]

@stephan75

or the utilplugin2?

Yes, I would also recommend the utilsplugin2, see http://wiki.openstreetmap.org/wiki/JOSM/Plugins/utilsplugin2

It has a “split area” tool. Split nodes will afaik be shared, but can of course be “unglued” afterwards.