diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index 830e373bfc..9c5ec72d4e 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -1048,19 +1048,12 @@ void GUI_App::post_init()
             else {
                 mainframe->select_tab(size_t(MainFrame::tp3DEditor));
                 plater_->select_view_3D("3D");
-                Plater::TakeSnapshot      snapshot(this->plater(), "Load Project", UndoRedo::SnapshotType::ProjectSeparator);
-                const std::vector<size_t> res = this->plater()->load_files(this->init_params->input_files);
-                if (!res.empty()) {
-                    if (this->init_params->input_files.size() == 1) {
-                        // Update application titlebar when opening a project file
-                        const std::string& filename = this->init_params->input_files.front();
-                        this->plater()->up_to_date(true, false);
-                        this->plater()->up_to_date(true, true);
-                        //BBS: remove amf logic as project
-                        if (boost::algorithm::iends_with(filename, ".3mf"))
-                            this->plater()->set_project_filename(from_u8(filename));
-                    }
+                wxArrayString input_files;
+                for (auto & file : this->init_params->input_files) {
+                    input_files.push_back(file);
                 }
+                this->plater()->set_project_filename(_L("Untitled"));
+                this->plater()->load_files(input_files);
             }
         }
     }
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 08784b52a5..17f7a11657 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -7696,6 +7696,7 @@ int Plater::new_project(bool skip_confirm, bool silent)
     //get_partplate_list().update_slice_context_to_current_plate(p->background_process);
     //p->preview->update_gcode_result(p->partplate_list.get_current_slice_result());
     reset(transfer_preset_changes);
+    reset_project_dirty_after_save();
     reset_project_dirty_initial_presets();
     wxGetApp().update_saved_preset_from_current_preset();
     update_project_dirty_from_presets();
@@ -7871,7 +7872,7 @@ int Plater::save_project(bool saveAs)
     up_to_date(true, true);
 
     wxGetApp().update_saved_preset_from_current_preset();
-    p->dirty_state.reset_after_save();
+    reset_project_dirty_after_save();
     return wxID_YES;
 }