Am 04.11.2017 um 13:36 schrieb Andreas Bürki:
Agree. I would never delete old boundaries, as they might server later on for historical purposes, e.g. If somebody wants to do a map showing the development of community mergers in Switzerland.
As I've pointed out that has nothing to do with the changes at hand, but regardless of that: removing the old boundaries after mergers is simply a practical concern.
- they don't actually exist - they make editing (a lot) more difficult - there are no QA tools for them, essentially guaranteeing that they will be broken and useless after a couple of years - in summary: an awlful lot of baggage to carry around for the theoretical use case of documenting ~6 years of changes in the boundaries (which you can get from the history dump without all of the above issues)
But as said, that is not the issue at hand.
Simon