From b35d97f778d370eefc9ce3310e159fbca3c30716 Mon Sep 17 00:00:00 2001
From: Jan Oberhauser <jan.oberhauser@gmail.com>
Date: Sun, 9 Jan 2022 10:39:48 +0100
Subject: [PATCH] :bug: Fix issue that empty binary data overwrite others on
 merge

---
 packages/nodes-base/nodes/Merge/Merge.node.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/nodes-base/nodes/Merge/Merge.node.ts b/packages/nodes-base/nodes/Merge/Merge.node.ts
index 07b103f48..1b6915716 100644
--- a/packages/nodes-base/nodes/Merge/Merge.node.ts
+++ b/packages/nodes-base/nodes/Merge/Merge.node.ts
@@ -284,7 +284,7 @@ export class Merge implements INodeType {
 					}
 
 					for (const key of Object.keys(dataInput2[i].binary!)) {
-						newItem.binary[key] = dataInput2[i].binary![key];
+						newItem.binary[key] = dataInput2[i].binary![key] ?? newItem.binary[key];
 					}
 				}