+
+ /* check all these to-be-removed tracks against the
+ * possibility that they are selected by being
+ * in the same group as an approved track.
+ */
+
+ for (TrackViewList::iterator i = tracks_to_remove.begin(); i != tracks_to_remove.end(); ) {
+ RouteGroup* rg = (*i)->route_group();
+
+ if (rg && find (selected_route_groups.begin(), selected_route_groups.end(), rg) != selected_route_groups.end()) {
+ i = tracks_to_remove.erase (i);
+ } else {
+ ++i;
+ }
+ }
+
+ /* remove whatever is left */
+