I'm not sure if this will work as a change to the styles-file requires a
complete re-import (it doesn't work with the diffs), but as I read even
tiles.openstreetmap.org does a complete re-import once a week to fix
complications with the diff-import, so there might be a chance..
Peter
Thanks very much. Maybe at one point we should have a
script that
combines the original OSM file and additions from individual map
developers into a single file so that updates are easier, but maybe
it just works fine even without something like that.