From 89e9faac98c166912443c37c6621d8ee6741aaaa Mon Sep 17 00:00:00 2001
From: Samuel Vanhove <samuel@symbiotic.coop>
Date: Wed, 18 Oct 2023 17:59:59 -0400
Subject: [PATCH] dev/core#4703 edit with no parents crash

---
 CRM/Group/Form/Edit.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CRM/Group/Form/Edit.php b/CRM/Group/Form/Edit.php
index 7f615f322e..ebc9dd8a88 100644
--- a/CRM/Group/Form/Edit.php
+++ b/CRM/Group/Form/Edit.php
@@ -412,7 +412,9 @@ WHERE  title = %1
     if (isset($form->_id)) {
       $potentialParentGroupIds = CRM_Contact_BAO_GroupNestingCache::getPotentialCandidates($form->_id, $groupNames);
       // put back current groups because they are selected by default
-      $potentialParentGroupIds = array_merge($potentialParentGroupIds, $parentGroupIds);
+      if (!empty($parentGroupIds)) {
+        $potentialParentGroupIds = array_merge($potentialParentGroupIds, $parentGroupIds);
+      }
     }
     else {
       $potentialParentGroupIds = array_keys($groupNames);
-- 
2.25.1