dashfolders: fix bug in save as modal

public/app/features/dashboard/dashboard_srv.ts

@@ -86,7 +86,7 @@ export class DashboardSrv {
 
   save(clone, options) {
     options = options || {};
-    options.folderId = this.dash.meta.folderId;
+    options.folderId = this.dash.meta.folderId || clone.folderId;
 
     return this.backendSrv
       .saveDashboard(clone, options)