[OHM] Advice on modelling historical boundaries & where to keep them?

[Pieren]

FYI, I removed this week an historical boundary recently created in France:

http://www.openstreetmap.org/relation/4568925/history

The intend of this contributor was clearly to find an existing town
into its older region using the default OSM name finder (he was
involved in a forum discussion) where nominatim could, for instance,
sort the results by dates. Of course, tags like
"type=boundary:1790-1972" or "admin_level:1790-1972=2" are not
recognized by nominatim.
I also forwarded this contributor to OHM explaining that OSM is not
intended to support historical boundaries. But the demand exists.

Pieren