[OSM-talk] how to remove objects from the database ?

[Ævar Arnfjörð Bjarmason]

On Sun, Mar 7, 2010 at 19:59, François Van Der Biest > Last year, we
(= some french osmers) imported some data around Brest
> city (see for instance http://wiki.openstreetmap.org/wiki/BMO).
> Unfortunately, the source shapefiles were badly converted to WGS84,
> and this resulted in a shift of several meters for all data. Thus, we
> need to delete previously imported data (identified by the source tag)
> and reimport.

 1. Download the data in JOSM
 2. Open the search dialog
 3. Search for source=BLAHBLAH or whatever your source tag is
 4. Delete
 5. Upload