diff --git a/css/styles.css b/css/styles.css
index fa6a270..2e8f4f5 100644
--- a/css/styles.css
+++ b/css/styles.css
@@ -32,3 +32,11 @@
   text-decoration: none;
   cursor: pointer;
 }
+
+#pairs-wrapper .source-field,
+#pairs-wrapper .destination-field {
+  max-width: 49%;
+  width: 49%;
+  box-sizing: border-box;
+  display: inline-block; /* keeps both at 49% inside a cell */
+}
diff --git a/js/help_modal.js b/js/help_modal.js
index c3d39bf..ebc5484 100644
--- a/js/help_modal.js
+++ b/js/help_modal.js
@@ -7,17 +7,15 @@
         var modalContent = '<div id="help-modal" class="modal">' +
           '<div class="modal-content">' +
           '<span class="close-button">&times;</span>' +
-          '<h3>Consolidating existing Solr fields</h3>' +
-          '<p>The form allows you concatenate two or more existing Solr fields to a new multivalue field. </ br>' +
-          'Select existing fields from the dropdowns on the left to pair them with a new field</ br> ' +
-          'entered in the column on the right. </ br>The new field name need not exist in your Solr config already.</p>' +
-          '<h3>Normalizing Custom Strings</h3>' +
-          '<p>Create a Custom value string on your Solr index, and populate it with pipe separated tokens ' +
-          'such as <em>[node:field_country]|[node:field_geo_area]|node:field_geo_city]</em>, ' +
-          'then select this field in the Normalize selector below.  The resulting Solr field will be a comma-separated string, ' +
-          'allowing multiple values per tokenized Drupal field. </p>'
+          '<h3>Append Solr Fields</h3>' +
+          '<p>The form allows you append results from one or more Solr fields to an existing Solr field. <br>' +
+          'Select Source fields from the dropdowns on the left to append them with a Destination field on the right.' +
+          '</p>' +
+          '<p>Multiple source fields may be appended to a single destination field.</p>'
+
+
         '</div>' +
-          '</div>';
+        '</div>';
 
         $('body').append(modalContent);
         $('#help-modal').fadeIn();
diff --git a/roblib_alter_solr.services.yml b/roblib_alter_solr.services.yml
index c4cafdd..82f65c5 100644
--- a/roblib_alter_solr.services.yml
+++ b/roblib_alter_solr.services.yml
@@ -1,6 +1,6 @@
 services:
   roblib_alter_solr.event_subscriber:
     class: Drupal\roblib_alter_solr\EventSubscriber\RoblibAlterSolrSubscriber
-    arguments: ['@logger.factory', '@config.factory']
+    arguments: ['@logger.factory', '@config.factory', '@entity_type.manager']
     tags:
       - { name: event_subscriber }
diff --git a/src/EventSubscriber/RoblibAlterSolrSubscriber.php b/src/EventSubscriber/RoblibAlterSolrSubscriber.php
index 9e6acea..73562a1 100644
--- a/src/EventSubscriber/RoblibAlterSolrSubscriber.php
+++ b/src/EventSubscriber/RoblibAlterSolrSubscriber.php
@@ -7,6 +7,9 @@ use Drupal\Core\Logger\LoggerChannelFactoryInterface;
 use Drupal\search_api_solr\Event\SearchApiSolrEvents;
 use Drupal\search_api_solr\Event\PostCreateIndexDocumentEvent;
 use Drupal\Core\Config\ConfigFactory;
+use Drupal\search_api\Plugin\search_api\data_type\value\TextValue;
+use Drupal\taxonomy\Entity\Term;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
 
 /**
  * Allows users to combine Solr fields dynamically.
@@ -27,6 +30,13 @@ final class RoblibAlterSolrSubscriber implements EventSubscriberInterface {
    */
   protected $config;
 
+  /**
+   * The Entity Type Manager.
+   *
+   * @var \Drupal\Core\Config\ConfigFactory
+   */
+  protected $entityTypeManager;
+
   /**
    * Constructs a new RoblibAlterSolrSubscriber.
    *
@@ -34,10 +44,13 @@ final class RoblibAlterSolrSubscriber implements EventSubscriberInterface {
    *   The logger factory service.
    * @param \Drupal\Core\Config\ConfigFactory $config
    *   The config factory service.
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entityTypeManager
+   *    The EntityTypeManager.
    */
-  public function __construct(LoggerChannelFactoryInterface $logger_factory, ConfigFactory $config) {
+  public function __construct(LoggerChannelFactoryInterface $logger_factory, ConfigFactory $config, EntityTypeManagerInterface $entityTypeManager) {
     $this->logger = $logger_factory->get('roblib_alter_solr');
     $this->config = $config->get('roblib_alter_solr.settings');
+    $this->entityTypeManager = $entityTypeManager;
   }
 
   /**
@@ -59,35 +72,45 @@ final class RoblibAlterSolrSubscriber implements EventSubscriberInterface {
     $solrDocument = $event->getSolariumDocument();
     $item = $event->getSearchApiItem();
     $pairs = $this->config->get('pairs');
-    foreach ($pairs as $index => $values) {
-      $fields = array_values($values['source']);
-      $consolidated_values = [];
+    $results = [];
+    foreach ($pairs as $pair) {
+      $dest = $pair['destination'];
+      if (!isset($results[$dest])) {
+        $results[$dest] = [];
+      }
+      $results[$dest][] = $pair['source'];
+    }
+    $consolidated_values = [];
+    foreach ($results as $index => $fields) {
+      $consolidated_values[$index] = [];
       foreach ($fields as $field) {
         $field_value = $item->getField($field);
         if ($field_value && $field_value->getValues()) {
-          $all_values = $field_value->getValues();
-          $consolidated_values[] = $all_values[0];
+          $values = $field_value->getValues();
+          $normalized = array_map(function($v) {
+            if ($v instanceof TextValue) {
+              return $v->getText();
+            }
+            elseif (is_object($v) && method_exists($v, 'getValue')) {
+              return $v->getValue();
+            }
+            elseif (is_array($v)) {
+              return implode(', ', array_map('strval', $v));
+            }
+            return (string) $v;
+          }, $values);
+          $consolidated_values[$index] = array_merge($normalized, $consolidated_values[$index]);
         }
       }
-      if ($consolidated_values) {
-        $field_name = "sm_{$values['destination']}";
-        $solrDocument->setField($field_name, $consolidated_values);
-      }
-      foreach ($this->config->get('normalize') as $name) {
-        $field_value = $item->getField($name);
-        if ($field_value && $field_value->getValues()) {
-          $value = $field_value->getValues()[0] ?? '';
-          $cleaned_string = preg_match('/^\|+$/', $value) ? '' : preg_replace('/\|+/', ', ', $value);
-          if ($cleaned_string) {
-            $solrDocument->setField("ss_{$name}", $cleaned_string);
-          }
-          else {
-            $solrDocument->removeField("ss_{$name}");
-          }
-
-        }
+    }
+    if ($consolidated_values) {
+      foreach ($consolidated_values as $field_name => $values) {
+        $source = $item->getField($field_name);
+        $source_values = $source->getValues();
+        $array_values = array_merge($source_values, $values);
+        $field_name = "sm_{$field_name}";
+        $solrDocument->setField($field_name, $array_values);
       }
-
     }
   }
 
diff --git a/src/Form/RoblibAlterSolrSettingsForm.php b/src/Form/RoblibAlterSolrSettingsForm.php
index d0db28e..4b7a988 100644
--- a/src/Form/RoblibAlterSolrSettingsForm.php
+++ b/src/Form/RoblibAlterSolrSettingsForm.php
@@ -35,7 +35,7 @@ final class RoblibAlterSolrSettingsForm extends ConfigFormBase {
     $solr_fields = $solr_config->get('field_settings');
     $fields_options = [];
     foreach ($solr_fields as $name => $field) {
-      $fields_options[$name] = $field['label'];
+      $fields_options[$name] = $field['label'] . ' - ' . $name;
     }
     // Use getStorage() to persist state across AJAX calls.
     $pairs = $form_state->getStorage()['pairs'] ?? $form_state->get('pairs') ?? $config->get('pairs') ?? [];
@@ -46,6 +46,9 @@ final class RoblibAlterSolrSettingsForm extends ConfigFormBase {
       '#prefix' => '<div id="open_link-wrapper">',
       '#suffix' => '</div>',
     ];
+
+
+
     $form['pairs_description'] = [
       '#type' => 'markup',
       '#markup' => '<p><strong>' . $this->t('Define the source and destination mappings.') . '</strong></p>',
@@ -53,26 +56,52 @@ final class RoblibAlterSolrSettingsForm extends ConfigFormBase {
     $form['pairs'] = [
       '#type' => 'table',
       '#header' => [
+        '',
         $this->t('Source'),
         $this->t('Destination'),
         $this->t('Operations'),
+        $this->t('Weight'),
+      ],
+      '#tabledrag' => [
+        [
+          'action' => 'order',   // we are ordering rows
+          'relationship' => 'sibling',
+          'group' => 'pairs-weight', // CSS class applied to the weight field
+        ],
       ],
       '#prefix' => '<div id="pairs-wrapper">',
       '#suffix' => '</div>',
     ];
+
     $added = FALSE;
 
     foreach ($pairs as $index => $pair) {
+      $form['pairs'][$index]['#attributes']['class'][] = 'draggable';
+      $form['pairs'][$index]['handle'] = [
+        '#markup' => '',
+        '#attributes' => ['class' => ['tabledrag-handle']],
+      ];
       $form['pairs'][$index]['source'] = [
         '#type' => 'select',
-        '#multiple' => TRUE,
         '#options' => $fields_options,
         '#default_value' => $pair['source'] ?? '',
+        '#attributes' => ['class' => ['source-field']],
       ];
 
       $form['pairs'][$index]['destination'] = [
-        '#type' => 'textfield',
+        '#type' => 'select',
+        '#options' => $fields_options,
         '#default_value' => $pair['destination'] ?? '',
+        '#attributes' => ['class' => ['destination-field']],
+      ];
+      $form['pairs'][$index]['weight'] = [
+        '#type' => 'weight',
+        '#title' => $this->t('Weight for row @row', ['@row' => $index]),
+        '#title_display' => 'invisible',
+        '#default_value' => $pair['weight'] ?? 0,
+        '#attributes' => [
+          'class' => ['pairs-weight', 'tabledrag-hide'],
+        ],
       ];
       if ($pair['source'] && $pair['destination']) {
         $form['pairs'][$index]['remove'] = [
@@ -101,25 +130,37 @@ final class RoblibAlterSolrSettingsForm extends ConfigFormBase {
         $form['pairs'][$index]['destination']['#attributes'] = ['class' => ['destination-field']];
         $added = TRUE;
       }
-
     }
     if (!$added) {
       $unique_id = uniqid();
       $pairs[$unique_id] = ['source' => '', 'destination' => ''];
+      $form['pairs'][$unique_id]['handle'] = [
+        '#markup' => '',
+        '#attributes' => ['class' => ['tabledrag-handle']],
+      ];
       $form['pairs'][$unique_id]['source'] = [
         '#type' => 'select',
-        '#multiple' => TRUE,
         '#options' => $fields_options,
-        '#default_value' => '',
+        '#default_value' => $pair['source'] ?? '',
         '#attributes' => ['class' => ['source-field']],
       ];
 
       $form['pairs'][$unique_id]['destination'] = [
-        '#type' => 'textfield',
+        '#type' => 'select',
+        '#options' => $fields_options,
         '#default_value' => '',
         '#attributes' => ['class' => ['destination-field']],
       ];
-      $form['add'] = [
+      $form['pairs'][$unique_id]['weight'] = [
+        '#type' => 'weight',
+        '#title' => $this->t('Weight for row @row', ['@row' => $unique_id]),
+        '#title_display' => 'invisible',
+        '#default_value' => $pair['weight'] ?? 0,
+        '#attributes' => [
+          'class' => ['pairs-weight', 'tabledrag-hide'],
+        ],
+      ];
+      $form['pairs'][$unique_id]['add'] = [
         '#type' => 'submit',
         '#value' => $this->t('Add Row'),
         '#submit' => ['::addCallback'],
@@ -128,18 +169,8 @@ final class RoblibAlterSolrSettingsForm extends ConfigFormBase {
           'wrapper' => 'pairs-wrapper',
         ],
       ];
-
     }
-    $form['normalize_description'] = [
-      '#type' => 'markup',
-      '#markup' => '<p><strong>' . $this->t('Select aggregated field(s) to be normalized..') . '</strong></p>',
-    ];
-    $form['normalize'] = [
-      '#type' => 'select',
-      '#multiple' => TRUE,
-      '#options' => $fields_options,
-      '#default_value' => $config->get('normalize') ?? '',
-    ];
+
     $form['#attached']['library'][] = 'roblib_alter_solr/roblib_alter_solr';
 
     return parent::buildForm($form, $form_state);
@@ -185,12 +216,15 @@ final class RoblibAlterSolrSettingsForm extends ConfigFormBase {
    */
   public function submitForm(array &$form, FormStateInterface $form_state) {
     $pairs = $form_state->getValue('pairs');
+    $filtered_pairs= array_filter($pairs, function ($item) {
+      return !empty($item['destination']);
+    });
     $normalize = $form_state->getValue('normalize');
     $this->config('roblib_alter_solr.settings')
-      ->set('pairs', $pairs)
-      ->set('normalize', $normalize)
+      ->set('pairs', $filtered_pairs)
       ->save();
-    $this->messenger()->addStatus($this->t('Configuration saved successfully.'));
+    $this->messenger()
+      ->addStatus($this->t('Configuration saved successfully.'));
   }
 
 }