Save tree state before cancel of the record on reload

issue7818
review54411002

src/tab.js

@@ -725,7 +725,6 @@
                     if (this.screen.current_record) {
                         record_id = this.screen.current_record.id;
                     }
-                    this.screen.save_tree_state(false);
                     if (this.screen.current_view.view_type != 'form') {
                         return this.screen.search_filter(
                             this.screen.screen_container.search_entry.val())
@@ -752,6 +751,7 @@
             if (test_modified) {
                 return this.modified_save().then(reload);
             } else {
+                this.screen.save_tree_state(false);
                 return reload();
             }
         },