From aa842d8741f76852c0e2cf438517fd54ed7f93c0 Mon Sep 17 00:00:00 2001
From: Ryan Cramer <ryan@processwire.com>
Date: Thu, 10 Nov 2022 11:52:59 -0500
Subject: [PATCH] Fix issue processwire/processwire-issues#1638

---
 wire/core/Field.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wire/core/Field.php b/wire/core/Field.php
index cd986316..8529eb66 100644
--- a/wire/core/Field.php
+++ b/wire/core/Field.php
@@ -512,7 +512,7 @@ class Field extends WireData implements Saveable, Exportable {
 
 		if($this->type) {
 			$typeData = $this->type->exportConfigData($this, $data);
-			$data = array_merge($data, $typeData);
+			$data = array_merge($typeData, $data); // argument order reversed per #1638
 		}
 
 		// remove named flags from data since the 'flags' property already covers them