diff --git a/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/impl/registry/sync/PersistentDynamicRegistryHandler.java b/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/impl/registry/sync/PersistentDynamicRegistryHandler.java
index 509b5b293..a3ffbb478 100644
--- a/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/impl/registry/sync/PersistentDynamicRegistryHandler.java
+++ b/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/impl/registry/sync/PersistentDynamicRegistryHandler.java
@@ -169,7 +169,7 @@ public class PersistentDynamicRegistryHandler {
 			for (String key : existingTag.getKeys()) {
 				if (!registryTag.contains(key)) {
 					LOGGER.debug("Saving orphaned registry entry: " + key);
-					registryTag.putInt(key, registryTag.getInt(key));
+					registryTag.putInt(key, existingTag.getInt(key));
 				}
 			}
 		}
diff --git a/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/impl/registry/sync/RegistrySyncManager.java b/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/impl/registry/sync/RegistrySyncManager.java
index edfa351a3..d694b657e 100644
--- a/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/impl/registry/sync/RegistrySyncManager.java
+++ b/fabric-registry-sync-v0/src/main/java/net/fabricmc/fabric/impl/registry/sync/RegistrySyncManager.java
@@ -224,7 +224,7 @@ public final class RegistrySyncManager {
 					for (String key : previousRegistryData.getKeys()) {
 						if (!registryTag.contains(key)) {
 							LOGGER.debug("Saving orphaned registry entry: " + key);
-							registryTag.putInt(key, registryTag.getInt(key));
+							registryTag.putInt(key, previousRegistryData.getInt(key));
 						}
 					}
 				}