fix(core): Fix import command for workflows with old format(pre UM) (#5403)

* Replace invalid credentials when importing workflows

* Remove useless console.logs

packages/cli/src/commands/import/workflow.ts

@@ -27,6 +27,7 @@ import type { User } from '@db/entities/User';
 import { setTagsForImport } from '@/TagHelpers';
 import type { ICredentialsDb, IWorkflowToImport } from '@/Interfaces';
 import { disableAutoGeneratedIds } from '@db/utils/commandHelpers';
+import { replaceInvalidCredentials } from '@/WorkflowHelpers';
 
 const FIX_INSTRUCTION =
 	'Please fix the database by running ./packages/cli/bin/n8n user-management:reset';
@@ -125,7 +126,7 @@ export class ImportWorkflowsCommand extends Command {
 				});
 
 				totalImported = files.length;
-
+				console.info(`Importing ${totalImported} workflows...`);
 				await Db.getConnection().transaction(async (transactionManager) => {
 					this.transactionManager = transactionManager;
 
@@ -165,17 +166,26 @@ export class ImportWorkflowsCommand extends Command {
 				this.transactionManager = transactionManager;
 
 				for (const workflow of workflows) {
+					let oldCredentialFormat = false;
 					if (credentials.length > 0) {
 						workflow.nodes.forEach((node: INode) => {
 							this.transformCredentials(node, credentials);
-
 							if (!node.id) {
 								// eslint-disable-next-line no-param-reassign
 								node.id = uuid();
 							}
+							if (!node.credentials?.id) {
+								oldCredentialFormat = true;
+							}
 						});
 					}
-
+					if (oldCredentialFormat) {
+						try {
+							await replaceInvalidCredentials(workflow as unknown as WorkflowEntity);
+						} catch (error) {
+							console.log(error);
+						}
+					}
 					if (Object.prototype.hasOwnProperty.call(workflow, 'tags')) {
 						await setTagsForImport(transactionManager, workflow, tags);
 					}