-- To paraphrase, if there isn't an existing item, OR if the admin level has changed
IF existingplacex.osm_type IS NULL OR
- (coalesce(existingplacex.admin_level, 15) != coalesce(NEW.admin_level, 15) AND existingplacex.class = 'boundary' AND existingplacex.type = 'administrative')
+ (existingplacex.class = 'boundary' AND
+ ((coalesce(existingplacex.admin_level, 15) != coalesce(NEW.admin_level, 15) AND existingplacex.type = 'administrative') OR
+ (existingplacex.type != NEW.type)))
THEN
IF existingplacex.osm_type IS NOT NULL THEN