diff --git a/src/slic3r/GUI/GUI_Preview.cpp b/src/slic3r/GUI/GUI_Preview.cpp
index 9860f26b1..9db490787 100644
--- a/src/slic3r/GUI/GUI_Preview.cpp
+++ b/src/slic3r/GUI/GUI_Preview.cpp
@@ -355,11 +355,11 @@ void Preview::set_drop_target(wxDropTarget* target)
         SetDropTarget(target);
 }
 
-void Preview::load_print()
+void Preview::load_print(bool keep_z_range)
 {
     PrinterTechnology tech = m_process->current_printer_technology();
     if (tech == ptFFF)
-        load_print_as_fff();
+        load_print_as_fff(keep_z_range);
     else if (tech == ptSLA)
         load_print_as_sla();
 }
@@ -390,7 +390,7 @@ void Preview::refresh_print()
     if (!IsShown())
         return;
 
-    load_print();
+    load_print(true);
 }
 
 void Preview::bind_event_handlers()
@@ -447,10 +447,10 @@ void Preview::reset_sliders()
     m_double_slider_sizer->Hide((size_t)0);
 }
 
-void Preview::update_sliders(const std::vector<double>& layers_z)
+void Preview::update_sliders(const std::vector<double>& layers_z, bool keep_z_range)
 {
     m_enabled = true;
-    update_double_slider(layers_z);
+    update_double_slider(layers_z, keep_z_range);
     m_double_slider_sizer->Show((size_t)0);
     Layout();
 }
@@ -559,13 +559,18 @@ static int find_close_layer_idx(const std::vector<double>& zs, double &z, double
     return -1;
 }
 
-void Preview::update_double_slider(const std::vector<double>& layers_z)
+void Preview::update_double_slider(const std::vector<double>& layers_z, bool keep_z_range)
 {
     // Save the initial slider span.
     double z_low        = m_slider->GetLowerValueD();
     double z_high       = m_slider->GetHigherValueD();
     bool   was_empty    = m_slider->GetMaxValue() == 0;
     bool force_sliders_full_range = was_empty;
+    if (!keep_z_range)
+    {
+        bool span_changed = layers_z.empty() || std::abs(layers_z.back() - m_slider->GetMaxValueD()) > 1e-6;
+        force_sliders_full_range |= span_changed;
+    }
     bool   snap_to_min = force_sliders_full_range || m_slider->is_lower_at_min();
 	bool   snap_to_max  = force_sliders_full_range || m_slider->is_higher_at_max();
 
@@ -652,7 +657,7 @@ void Preview::update_double_slider_from_canvas(wxKeyEvent& event)
         event.Skip();
 }
 
-void Preview::load_print_as_fff()
+void Preview::load_print_as_fff(bool keep_z_range)
 {
     if (m_loaded || m_process->current_printer_technology() != ptFFF)
         return;
@@ -753,7 +758,7 @@ void Preview::load_print_as_fff()
             reset_sliders();
             m_canvas_widget->Refresh();
         } else
-            update_sliders(zs);
+            update_sliders(zs, keep_z_range);
     }
 }
 
diff --git a/src/slic3r/GUI/GUI_Preview.hpp b/src/slic3r/GUI/GUI_Preview.hpp
index 59f62ded1..216583580 100644
--- a/src/slic3r/GUI/GUI_Preview.hpp
+++ b/src/slic3r/GUI/GUI_Preview.hpp
@@ -113,7 +113,7 @@ public:
     void select_view(const std::string& direction);
     void set_drop_target(wxDropTarget* target);
 
-    void load_print();
+    void load_print(bool keep_z_range = false);
     void reload_print(bool keep_volumes = false);
     void refresh_print();
 
@@ -126,7 +126,7 @@ private:
     void show_hide_ui_elements(const std::string& what);
 
     void reset_sliders();
-    void update_sliders(const std::vector<double>& layers_z);
+    void update_sliders(const std::vector<double>& layers_z, bool keep_z_range = false);
 
     void on_size(wxSizeEvent& evt);
     void on_choice_view_type(wxCommandEvent& evt);
@@ -138,14 +138,14 @@ private:
 
     // Create/Update/Reset double slider on 3dPreview
     void create_double_slider();
-    void update_double_slider(const std::vector<double>& layers_z);
+    void update_double_slider(const std::vector<double>& layers_z, bool keep_z_range = false);
     void fill_slider_values(std::vector<std::pair<int, double>> &values,
                             const std::vector<double> &layers_z);
     void reset_double_slider();
     // update DoubleSlider after keyDown in canvas
     void update_double_slider_from_canvas(wxKeyEvent& event);
 
-    void load_print_as_fff();
+    void load_print_as_fff(bool keep_z_range = false);
     void load_print_as_sla();
 
     void on_sliders_scroll_changed(wxEvent& event);