From 91cd542630ed53ff72f3267eca47e4331cfc844e Mon Sep 17 00:00:00 2001
From: Kevin Jahns <kevin.jahns@protonmail.com>
Date: Wed, 18 Mar 2026 14:24:03 +0100
Subject: [PATCH] retain legacyTypeRef when undoing content

---
 src/ytype.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ytype.js b/src/ytype.js
index b90f4faa..ef98d0ef 100644
--- a/src/ytype.js
+++ b/src/ytype.js
@@ -707,7 +707,9 @@ export class YType {
    * @return {YType<DConf>}
    */
   _copy () {
-    return new YType(this.name)
+    const ytype = new YType(this.name)
+    ytype._legacyTypeRef = this._legacyTypeRef
+    return ytype
   }
 
   /**