bug

src/osmfixer/index/StatIdx.cpp

@@ -304,7 +304,7 @@ void StatIdx::initGroups() {
       if (orGr.mergeId == 0)
         orGr.mergeId = _stations[i].group;
       else if (orGr.mergeId != _stations[i].group)
-        orGr.mergeId = _stations[i].group;
+        orGr.mergeId = orGr.id;
     }
 
     assert(_stations[i].group < _groups.size());