diff --git a/app/Controllers/Contact.php b/app/Controllers/Contact.php
index be634cd..54db284 100644
--- a/app/Controllers/Contact.php
+++ b/app/Controllers/Contact.php
@@ -95,7 +95,7 @@ class Contact extends Controller {
                 if ($result) {
                     return $this->respondCreated([
                     'status'  => 'success',
-                    'message' => 'Contact created successfully',
+                    'message' => 'Contact updated successfully',
                     'data'    => $dataContact,
                 ]);
             } else {
@@ -160,6 +160,7 @@ class Contact extends Controller {
     private function prepareContactDetailData(array $input): array {
         foreach($input['ContactDetail'] as $detail) {
             $data[] = [
+                "SiteID" => $detail['SiteID'] ?? null,
                 "ContactCode" => $detail['ContactCode'] ?? null,
                 "ContactEmail" => $detail['ContactEmail'] ?? null,
                 "OccupationID" => $detail['OccupationID'] ?? null,
diff --git a/app/Models/ContactDetailModel.php b/app/Models/ContactDetailModel.php
index 9ca3d8b..2059c93 100644
--- a/app/Models/ContactDetailModel.php
+++ b/app/Models/ContactDetailModel.php
@@ -8,4 +8,30 @@ class ContactDetailModel extends Model {
   protected $table      = 'contactdetail';
   protected $primaryKey = 'ContactDetID';
   protected $allowedFields = ['ContactID', 'SiteID', 'ContactCode', 'ContactEmail', 'OccupationID', 'JobTitle', 'Department', 'ContactStartDate', 'ContactEndDate']; 
+
+  public function syncDetails(int $contactId, array $details) {
+    $kept = [];
+
+    foreach ($details as $detail) {
+      $detail['ContactID'] = $contactId;
+
+      $existing = $this->where('SiteID', $detail['SiteID'])
+        ->where('ContactID', $contactId)
+        ->first();
+
+        if ($existing) {
+          $this->update($existing[$this->primaryKey], $detail);
+          $kept[] = $existing[$this->primaryKey];
+        } else {
+          $newId = $this->insert($detail);
+          $kept[] = $newId;
+        }
+    }
+
+    if (!empty($kept)) {
+      $this->where('ContactID', $contactId)
+        ->whereNotIn($this->primaryKey, $kept)
+        ->delete();
+    } else { $this->where('ContactID', $contactId)->delete(); }
+  }
 }
diff --git a/app/Models/ContactModel.php b/app/Models/ContactModel.php
index 85b4c22..fcba800 100644
--- a/app/Models/ContactModel.php
+++ b/app/Models/ContactModel.php
@@ -10,7 +10,7 @@ class ContactModel extends Model {
   protected $allowedFields = ['NameFirst', 'NameLast', 'Title', 'Initial', 'Birthdate', 'EmailAddress1', 'EmailAddress2', 'Phone', 'MobilePhone1', 'MobilePhone2', 'Specialty', 'SubSpecialty']; 
 
 	public function getContactsWithDetail() {
- 		$rows = $this->select("c.ContactID, cd.ContactCode, c.NameFirst, c.NameLast, c.Specialty")
+ 		$rows = $this->select("c.ContactID, cd.SiteID, cd.ContactCode, c.NameFirst, c.NameLast, c.Specialty")
 			->join("contactdetail cd", "c.ContactID=cd.ContactID", "left") 
 			->join("occupation o","cd.OccupationID=o.OccupationID", "left")
 			->get()->getResultArray();
@@ -40,7 +40,7 @@ class ContactModel extends Model {
 		foreach ($rows as $row) {
 			if (!empty($row['ContactDetID'])) {
 				$contact['Details'][] = [
-					'SiteID' => $row['SiteID'] ?? null,
+					'SiteID' => $row['SiteID'] ?? null, 
 					'ContactDetID' => $row['ContactDetID'],
 					'ContactCode' => $row['ContactCode'] ?? null,
 					'ContactEmail' => $row['DetailPhone'] ?? null,
@@ -82,23 +82,17 @@ class ContactModel extends Model {
 		}
 	}
 
-	public function updateContact(array $contactData, array $contactDetails)  {
+	public function updateContact(int $ContactID, array $contactData, array $contactDetails)  {
 		$db = \Config\Database::connect();
 		$db->transStart();
 
 		try {
-			if (!$this->update($contactData)) {
-				throw new \Exception('Failed to insert contact');
+			if (!$this->update($ContactID, $contactData)) {
+				throw new \Exception('Failed to update contact');
 			}
-			$ContactID = $this->getInsertID();
 
 			$detailModel = new \App\Models\ContactDetailModel();
-			foreach ($contactDetails as $detail) {
-				$detail['ContactID'] = $ContactID;
-				if (!$detailModel->insert($detail)) {
-					throw new \Exception('Failed to insert contact details');
-				}
-			}
+			$detailModel->syncDetails($ContactID, $contactDetails);
 
 			$db->transComplete();
 			return $db->transStatus();