diff --git a/src/slic3r/GUI/GUI_ObjectList.cpp b/src/slic3r/GUI/GUI_ObjectList.cpp
index 79b8eae52..1c9a5b5d8 100644
--- a/src/slic3r/GUI/GUI_ObjectList.cpp
+++ b/src/slic3r/GUI/GUI_ObjectList.cpp
@@ -1923,11 +1923,9 @@ void ObjectList::load_modifier(const wxArrayString& input_files, ModelObject& mo
         ModelVolume* new_volume = model_object.add_volume(std::move(mesh), type);
         new_volume->name = boost::filesystem::path(input_file).filename().string();
 
-        // adjust the position according to the bounding box
-        const BoundingBoxf3 mesh_bb = new_volume->mesh().bounding_box();
-        new_volume->set_transformation(Geometry::Transformation::volume_to_bed_transformation(v->get_instance_transformation(), mesh_bb));
-        auto offset = Vec3d(instance_bb.max.x(), instance_bb.min.y(), instance_bb.min.z()) + 0.5 * mesh_bb.size() - v->get_instance_offset();
-        new_volume->set_offset(v->get_instance_transformation().get_matrix(true).inverse() * offset);
+        // BBS: object_mesh.get_init_shift() keep the relative position
+        TriangleMesh object_mesh = model_object.volumes[0]->mesh();
+        new_volume->set_offset(new_volume->mesh().get_init_shift() - object_mesh.get_init_shift());
 
         // set a default extruder value, since user can't add it manually
         // BBS