diff --git a/src/libslic3r/Model.cpp b/src/libslic3r/Model.cpp
index 8e2d1f391c..d001acedb1 100644
--- a/src/libslic3r/Model.cpp
+++ b/src/libslic3r/Model.cpp
@@ -415,6 +415,7 @@ void Model::convert_multipart_object(unsigned int max_extruders)
     
     ModelObject* object = new ModelObject(this);
     object->input_file = this->objects.front()->input_file;
+    object->name = this->objects.front()->name;
 
     reset_auto_extruder_id();
 
diff --git a/src/slic3r/GUI/GUI_ObjectList.cpp b/src/slic3r/GUI/GUI_ObjectList.cpp
index 53066d7082..9bf1b03e54 100644
--- a/src/slic3r/GUI/GUI_ObjectList.cpp
+++ b/src/slic3r/GUI/GUI_ObjectList.cpp
@@ -868,7 +868,7 @@ void ObjectList::del_settings_from_config()
 
 void ObjectList::del_instances_from_object(const int obj_idx)
 {
-    auto instances = (*m_objects)[obj_idx]->instances;
+    auto& instances = (*m_objects)[obj_idx]->instances;
     if (instances.size() <= 1)
         return;
 
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 40fffc85ba..41d9038a09 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -1109,6 +1109,9 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path> &input_
                 // $self->async_apply_config;
             } else {
                 model = Slic3r::Model::read_from_file(path.string(), nullptr, false);
+                for (auto obj : model.objects)
+                    if (obj->name.empty())
+                        obj->name = fs::path(obj->input_file).filename().string();
             }
         }
         catch (const std::runtime_error &e) {
@@ -1156,7 +1159,7 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path> &input_
             new_model->convert_multipart_object(nozzle_dmrs->values.size());
         }
 
-        auto loaded_idxs = load_model_objects(model.objects);
+        auto loaded_idxs = load_model_objects(new_model->objects);
         obj_idxs.insert(obj_idxs.end(), loaded_idxs.begin(), loaded_idxs.end());
     }
 
@@ -1176,7 +1179,7 @@ std::vector<size_t> Plater::priv::load_model_objects(const ModelObjectPtrs &mode
     bool scaled_down = false;
     std::vector<size_t> obj_idxs;
 #if ENABLE_EXTENDED_SELECTION
-    unsigned int obj_count = 0;
+    unsigned int obj_count = model.objects.size();
 #endif // ENABLE_EXTENDED_SELECTION
 
     for (ModelObject *model_object : model_objects) {
diff --git a/src/slic3r/GUI/wxExtensions.cpp b/src/slic3r/GUI/wxExtensions.cpp
index 33e34137d2..27628c3db4 100644
--- a/src/slic3r/GUI/wxExtensions.cpp
+++ b/src/slic3r/GUI/wxExtensions.cpp
@@ -789,7 +789,7 @@ void PrusaObjectDataViewModel::GetItemInfo(const wxDataViewItem& item, ItemType&
     type = itUndef;
 
     PrusaObjectDataViewModelNode *node = (PrusaObjectDataViewModelNode*)item.GetID();
-    if (!node || node->GetIdx() < 0 && node->GetType() != itObject) 
+    if (!node || node->GetIdx() < 0 && !(node->GetType() & (itObject|itSettings|itInstanceRoot))) 
         return;
 
     idx = node->GetIdx();