diff --git a/app/Model/DecayingModelsFormulas/Base.php b/app/Model/DecayingModelsFormulas/Base.php
index ca30b24fb..dc76f87ea 100644
--- a/app/Model/DecayingModelsFormulas/Base.php
+++ b/app/Model/DecayingModelsFormulas/Base.php
@@ -46,24 +46,30 @@ abstract class DecayingModelBase
             foreach ($attribute['EventTag'] as $i => $tag) {
                 $tags[] = $tag;
                 $namespace_predicate = explode('=', $tag['Tag']['name'])[0];
-                $temp_mapping[$namespace_predicate] = $i;
+                $temp_mapping[$namespace_predicate][] = $i;
             }
         }
         if (isset($attribute['AttributeTag'])) {
             foreach ($attribute['AttributeTag'] as $tag) {
                 $namespace_predicate = explode('=', $tag['Tag']['name'])[0];
-                if (isset($temp_mapping[$namespace_predicate])) { // need to override event tag
-                    $overridden_tags[] = array(
-                        'EventTag' => $tags[$temp_mapping[$namespace_predicate]],
-                        'AttributeTag' => $tag
-                    );
-                    $tags[$temp_mapping[$namespace_predicate]] = $tag;
+                if (!empty($temp_mapping[$namespace_predicate])) { // need to override event tag
+                    foreach ($temp_mapping[$namespace_predicate] as $i => $eventtag_index) {
+                        $overridden_tags[] = array(
+                            'EventTag' => $tags[$eventtag_index],
+                            'AttributeTag' => $tag
+                        );
+                        if ($i === 0)  { // override first one
+                            $tags[$eventtag_index] = $tag;
+                        } else { // remove remaining overriden
+                            unset($tags[$eventtag_index]);
+                        }
+                    }
                 } else {
                     $tags[] = $tag;
                 }
             }
         }
-        return array('tags' => $tags, 'overridden' => $overridden_tags);
+        return array('tags' => array_values($tags), 'overridden' => $overridden_tags);
     }
 
     public function computeBasescore($model, $attribute)
diff --git a/app/webroot/js/decayingModelSimulation.js b/app/webroot/js/decayingModelSimulation.js
index 802f3fd41..1a77d8cab 100644
--- a/app/webroot/js/decayingModelSimulation.js
+++ b/app/webroot/js/decayingModelSimulation.js
@@ -513,13 +513,13 @@
                     this.overriddenTags.forEach(function(entry) {
                         var cur_namespace_predicate = entry.AttributeTag.Tag.name.split('=')[0];
                         if (namespace_predicate == cur_namespace_predicate) {
-                            overridden_html += '<div style="filter: grayscale(80%);">' + that._create_tag_html(entry.EventTag) + '</div>';
+                            overridden_html += '<div class="overriden_tag_wrapper" style="filter: grayscale(80%);">' + that._create_tag_html(entry.EventTag) + '</div>';
                         }
                     });
                     if (overridden_html !== '') {
                         return '<div style="position:relative;" class="useCursorPointer overridden_tags_container">'
                             + overridden_html
-                            + '<div style="top:-12px;margin-bottom:-12px; left:4px;margin-right:-4px; float: left;  position: relative;">' + html_tag + '</div>'
+                            + '<div class="attribute_tag_wrapper" style="top:-12px;margin-bottom:-12px; left:4px;margin-right:-4px; float: left;  position: relative;">' + html_tag + '</div>'
                         + '</div>';
                     } else {
                         return html_tag;
@@ -616,11 +616,12 @@
             },
 
             _generateOverridenExplanationPopoverHTML: function($div) {
-                var $tags = $div.find('.tag');
-                var $tag_event = $tags.eq(0);
-                var $tag_attribute = $tags.eq(1);
+                var $tags_event = $div.find('.overriden_tag_wrapper .tag');
+                var $tag_attribute = $div.find('.attribute_tag_wrapper .tag');
                 var html = '<div style="text-align: center;">';
-                    html += '<div>' + $tag_event[0].outerHTML + '</div>'
+                    $tags_event.each(function() {
+                        html += '<div>' + $(this)[0].outerHTML + '</div>'
+                    });
                     html += '<div><i class="fa fa-arrow-down"></i></div>'
                     html += '<div>' + $tag_attribute[0].outerHTML + '</div>'
                 html += '</div>';