diff --git a/src/Attribute/Property/Field/ForeignKey.php b/src/Attribute/Property/Field/ForeignKey.php
index 11970a9..0c5deeb 100644
--- a/src/Attribute/Property/Field/ForeignKey.php
+++ b/src/Attribute/Property/Field/ForeignKey.php
@@ -13,7 +13,7 @@ use Ulmus\Attribute\ConstrainActionEnum;
 class ForeignKey extends PrimaryKey {
     public function __construct(
         public ? string $name = null,
-        public ? string $type = 'bigint',
+        public ? string $type = null,
         public null|int|string $length = null,
         public ? int $precision = null,
         public array $attributes = [
diff --git a/src/EntityTrait.php b/src/EntityTrait.php
index 26a8723..26a2d92 100644
--- a/src/EntityTrait.php
+++ b/src/EntityTrait.php
@@ -112,7 +112,7 @@ trait EntityTrait {
                 $this->entityLoadedDataset = array_change_key_case($dataset, \CASE_LOWER);
             }
             elseif ($overwriteDataset) {
-                $this->entityLoadedDataset = array_change_key_case($dataset, \CASE_LOWER) + $this->entityLoadedDataset;
+                $this->entityLoadedDataset = iterator_to_array(array_change_key_case($dataset, \CASE_LOWER)) + $this->entityLoadedDataset;
             }
         }
         
@@ -261,10 +261,6 @@ trait EntityTrait {
     #[Ignore]
     public function __clone()
     {
-        foreach($this as $prop) {
-
-        }
-
         if ( null !== $pkField = $this->resolveEntity()->getPrimaryKeyField($this) ) {
             $key = key($pkField);