Fix import of merged flow

packages/node_modules/@node-red/editor-client/src/js/ui/diff.js

@@ -1411,7 +1411,7 @@ RED.diff = (function() {
         // Restore the original flow so subsequent merge resolutions can properly
         // identify new-vs-old
         RED.nodes.originalFlow(originalFlow);
-        imported[0].forEach(function(n) {
+        imported.nodes.forEach(function(n) {
             if (nodeChangedStates[n.id] || localChangedStates[n.id]) {
                 n.changed = true;
             }