anchor.diff:          if (slug === 'biodiversity_hotspots') {
             GFW.app.closeInfowindows();
           }
  -
  -        if (slug === 'ifl_2000') {
  -          if (ifl_2013.attributes['visible']) {
  -            GFW.app.removeLayer(ifl_2013);
  -          }
  -        } else if (slug === 'ifl_2013_deg') {
  -          if (ifl_2000.attributes['visible']) {
  -            GFW.app.removeLayer(ifl_2000);
  -          }
  -        } 
  -
  +        if (slug === 'ifl_2000' && ifl_2013.attributes['visible']) {
  +          setTimeout(function() {
  +            if ($('.ifl_layer_state').length > 0) {
  +              $('.ifl_layer_state').removeClass('ifl_layer_state');
  +              return;
  +            }
  +            $('li.ifl_2013_deg').find('a.forest_cover').addClass('ifl_layer_state').trigger('click');
  +          }, 100);
  +        } else if (slug === 'ifl_2013_deg' && ifl_2000.attributes['visible']) {
  +          setTimeout(function() {
  +            if ($('.ifl_layer_state').length > 0) {
  +              $('.ifl_layer_state').removeClass('ifl_layer_state');
  +              return;
  +            }
  +            $('li.ifl_2000').find('a.forest_cover').addClass('ifl_layer_state').trigger('click');
  +            }, 100);
  +          return;
  +        }
           if (visible) {
             GFW.app.addLayer(this.layer);
             ga('send', 'event', 'Filter', 'Toggle', slug);
  
positive.code:       this.forest2000Layer    = null;
        this.forestGainLayer    = null;
        this.idnPrimaryLayer    = null;
  
        this.currentBaseLayer = config.BASELAYER;
      },
  
negative.code:           disabled        = this.layer.get('disabled');
  
        if (disabled) return;
  
        Analysis.unblock_analysis();
  
        GFW.app.closeInfowindows();
  