diff --git a/src/Collection.php b/src/Collection.php
index 2644880..fd5712a 100644
--- a/src/Collection.php
+++ b/src/Collection.php
@@ -13,15 +13,17 @@ public function addToIndex()
         }
 
         $instance = $this->first();
+        $instance->setConnection($instance->getElasticsearchConnectionName());
+        $query = $this->first()->newQueryWithoutScopes();
 
-        $docs = $this->map(function ($model) {
+        $docs = $this->map(function ($model, $i) {
             return $model->toSearchableArray();
         });
 
-        return $instance->onSearchConnection(function ($instance) use ($docs) {
-            $query = $instance->newQueryWithoutScopes();
+        $success = $query->insert($docs->all());
 
-            return $query->insert($docs->all());
-        }, $instance);
+        unset($docs);
+
+        return $success;
     }
 }
diff --git a/src/Searchable.php b/src/Searchable.php
index e3c694c..889c813 100644
--- a/src/Searchable.php
+++ b/src/Searchable.php
@@ -109,17 +109,28 @@ public function removeFromIndex()
      */
     public function toSearchableArray()
     {
+        // Run this on the search connection if it's not the current connection
+        if ($this->getConnectionName() !== static::getElasticsearchConnectionName()) {
+            return $this->onSearchConnection(function ($model) {
+                return $model->toSearchableArray();
+            }, $this);
+        }
+
         $array = $this->toArray();
 
         foreach ($this->getArrayableRelations() as $key => $relation) {
             $attributeName = snake_case($key);
 
             if (isset($array[$attributeName]) && method_exists($relation, 'toSearchableArray')) {
-                $array[$attributeName] = $relation->toSearchableArray($array[$attributeName]);
+                $array[$attributeName] = $relation->onSearchConnection(function ($model) {
+                    return $model->toSearchableArray();
+                }, $relation);
             } elseif (isset($array[$attributeName]) && $relation instanceof \Illuminate\Support\Collection) {
-                $array[$attributeName] = $relation->map(function ($item, $i) use ($array, $attributeName) {
+                $array[$attributeName] = $relation->map(function ($item, $i) {
                     if (method_exists($item, 'toSearchableArray')) {
-                        return $item->toSearchableArray($array[$attributeName][$i]);
+                        return $item->onSearchConnection(function ($model) {
+                            return $model->toSearchableArray();
+                        }, $item);
                     }
 
                     return $item;
@@ -135,69 +146,15 @@ public function toSearchableArray()
             $subDocuments = $this->$field ?? [];
 
             foreach ($subDocuments as $subDocument) {
-                $array['child_documents'][] = $this->getSubDocumentIndexData($subDocument, $field);
+                $array['child_documents'][] = $this->onSearchConnection(function ($model) {
+                    return $model->getSubDocumentIndexData($model);
+                }, $subDocument);
             }
         }
 
-        $array = $this->datesToSearchable($array);
-
         return $array;
     }
 
-    /**
-     * Convert all dates to searchable format
-     *
-     * @param  array $array
-     * @return array
-     */
-    public function datesToSearchable(array $array): array
-    {
-        foreach ($this->getDates() as $dateField) {
-            if (isset($array[$dateField])) {
-                $array[$dateField] = $this->fromDateTimeSearchable($array[$dateField]);
-            }
-        }
-
-        foreach ($this->getArrayableRelations() as $key => $relation) {
-            $attributeName = snake_case($key);
-
-            if (isset($array[$attributeName]) && method_exists($relation, 'toSearchableArray')) {
-                $array[$attributeName] = $relation->datesToSearchable($array[$attributeName]);
-            } elseif (isset($array[$attributeName]) && $relation instanceof \Illuminate\Support\Collection) {
-                $array[$attributeName] = $relation->map(function ($item, $i) use ($array, $attributeName) {
-                    if (method_exists($item, 'toSearchableArray')) {
-                        return $item->datesToSearchable($array[$attributeName][$i]);
-                    }
-
-                    return $item;
-                })->all();
-            }
-        }
-
-        return $array;
-    }
-
-    /**
-     * Convert a DateTime to a string in ES format.
-     *
-     * @param  \DateTime|int $value
-     * @return string
-     */
-    public function fromDateTimeSearchable($value): string
-    {
-        return empty($value) ? $value : $this->asDateTime($value)->format($this->getSearchableDateFormat());
-    }
-
-    /**
-     * Return the format to be used for dates in Elasticsearch
-     *
-     * @return string
-     */
-    public function getSearchableDateFormat(): string
-    {
-        return 'Y-m-d\TH:i:s';
-    }
-
     /**
      * Build index details for a sub document
      *