Jonathan we've been though this multiple time.
The pre-merge municipalities do -completely- cease to exist as such and do not have any administrative borders of their own after the merger*. Mapping these as admin level 9 is simply wrong (I can live with retaining the borders as historic even though they are meaningless). Nobody in Switzerland maintains any such borders, even swisstopo simply uses the built up settlement areas to indicate the coverage of the places that, naturally, still exist after the mergers. Yes the former municipalities continue to exist as places, and no, they are not removed from the map, they simply don't exist as administrative entities any more.
I know you got the silly idea from the Germans, but their merged municipalities tend to retain some administrative bodies and the borders are still a matter of public record (that it is typical German in being overcomplicated and wasting the gains from the synergies of such mergers should provide, is a different topic and not our problem), that is not the case in Switzerland.
Simon
*yes there are rare occasions when municipalities are merged in to large cities and retain borders as quarters, but that happens once in a blue moon.
Am 18.12.2018 um 22:35 schrieb Jonathan Masur:
Also please PLEASE do not mark any merged municipalities (or borders between merging municipalities) deleted - instead just increase their administrative_level from 8 to 9. Municipalities are forced to merge for administrative and financial reasons and they do not do this to be removed from the map. Thanks.
S'il vous plaît ne supprimez PAS les anciennes communes ou les frontières entre elles, mais augmentez seulement leur tag "admin_level=" de 8 à 9. Merci. N'oubliez pas que les communes qui fusionnes le font par obligation financière et non pas pour rayer les villages de la carte.
Salutations,