diff --git a/ui/panels/app_actions.py b/ui/panels/app_actions.py
index 111d1be4..790d879d 100644
--- a/ui/panels/app_actions.py
+++ b/ui/panels/app_actions.py
@@ -1519,33 +1519,11 @@ class AppActions:
                     and getattr(self, "ssbo_editor", None)
                     and getattr(self.ssbo_editor, "last_import_tree_key", None)
                 ):
-                    selected_key = self.ssbo_editor.last_import_tree_key
-                    selection_cost = None
-                    if hasattr(self.ssbo_editor, "estimate_selection_cost"):
-                        try:
-                            selection_cost = self.ssbo_editor.estimate_selection_cost(selected_key)
-                        except Exception:
-                            selection_cost = None
-
-                    should_auto_select = True
-                    if selection_cost:
-                        object_count = int(selection_cost.get("object_count", 0))
-                        chunk_count = int(selection_cost.get("chunk_count", 0))
-                        is_root = bool(selection_cost.get("is_root"))
-                        # SSBO 导入后的顶层节点通常覆盖整片模型；
-                        # 只要它跨多个对象或多个 chunk，被自动选中后就会让静态批处理失效。
-                        # 因此这里只允许极小代价的单对象选择自动激活，其余统一保持未选中。
-                        if is_root or object_count > 1 or chunk_count > 1:
-                            should_auto_select = False
-
-                    if should_auto_select:
-                        self.ssbo_editor.select_node(selected_key)
-                    else:
-                        self.ssbo_editor.clear_selection(sync_world_selection=False)
-                        if hasattr(self.ssbo_editor, "_sync_editor_selection_reference"):
-                            self.ssbo_editor._sync_editor_selection_reference(None)
-                        if show_info_message:
-                            self.add_info_message("模型导入完成，已保持 SSBO 静态模式以避免导入后掉帧")
+                    self.ssbo_editor.clear_selection(sync_world_selection=False)
+                    if hasattr(self.ssbo_editor, "_sync_editor_selection_reference"):
+                        self.ssbo_editor._sync_editor_selection_reference(None)
+                    if show_info_message:
+                        self.add_info_message("模型导入完成，已保持 SSBO 静态模式以避免导入后掉帧")
                 elif hasattr(self, 'selection') and self.selection:
                     self.selection.updateSelection(model_node)