diff --git a/packages/node_modules/@node-red/editor-client/src/js/history.js b/packages/node_modules/@node-red/editor-client/src/js/history.js
index 2fa4e4427..646ec830f 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/history.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/history.js
@@ -536,6 +536,24 @@ RED.history = (function() {
                     RED.editor.updateNodeProperties(ev.node,outputMap);
                     RED.editor.validateNode(ev.node);
                 }
+                // If it's a Config Node, validate user nodes too.
+                // NOTE: The Config Node must be validated before validating users.
+                if (ev.node.users) {
+                    const validatedNodes = new Set();
+                    const userStack = ev.node.users.slice();
+
+                    validatedNodes.add(ev.node.id);
+                    while (userStack.length) {
+                        const node = userStack.pop();
+                        if (!validatedNodes.has(node.id)) {
+                            validatedNodes.add(node.id);
+                            if (node.users) {
+                                userStack.push(...node.users);
+                            }
+                            RED.editor.validateNode(node);
+                        }
+                    }
+                }
                 if (ev.links) {
                     inverseEv.createdLinks = [];
                     for (i=0;i<ev.links.length;i++) {