diff --git a/src/libslic3r/Technologies.hpp b/src/libslic3r/Technologies.hpp
index 369996fbaf..316cff195a 100644
--- a/src/libslic3r/Technologies.hpp
+++ b/src/libslic3r/Technologies.hpp
@@ -61,6 +61,7 @@
 #define ENABLE_MODIFIED_DOWNSCALE_ON_LOAD_OBJECTS_TOO_BIG (1 && ENABLE_2_4_0_ALPHA0)
 // Enable to push object instances under the bed
 #define ENABLE_ALLOW_NEGATIVE_Z (1 && ENABLE_2_4_0_ALPHA0)
+#define DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA (1 && ENABLE_ALLOW_NEGATIVE_Z)
 
 
 #endif // _prusaslicer_technologies_h_
diff --git a/src/slic3r/GUI/3DScene.cpp b/src/slic3r/GUI/3DScene.cpp
index c64c36ea85..00bad52ff7 100644
--- a/src/slic3r/GUI/3DScene.cpp
+++ b/src/slic3r/GUI/3DScene.cpp
@@ -23,6 +23,9 @@
 #include "libslic3r/Format/STL.hpp"
 #include "libslic3r/Utils.hpp"
 #include "libslic3r/AppConfig.hpp"
+#if DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
+#include "libslic3r/PresetBundle.hpp"
+#endif // DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -521,7 +524,11 @@ bool GLVolume::is_sla_pad() const { return this->composite_id.volume_id == -int(
 #if ENABLE_ALLOW_NEGATIVE_Z
 bool GLVolume::is_sinking() const
 {
+#if DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
+    if (is_modifier || GUI::wxGetApp().preset_bundle->printers.get_edited_preset().printer_technology() == ptSLA)
+#else
     if (is_modifier)
+#endif // DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
         return false;
     const BoundingBoxf3& box = transformed_convex_hull_bounding_box();
     return box.min(2) < -EPSILON && box.max(2) >= -EPSILON;
diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index cc8658fc27..c8e402a5d7 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -3571,7 +3571,11 @@ void GLCanvas3D::do_move(const std::string& snapshot_type)
         ModelObject* m = m_model->objects[i.first];
 #if ENABLE_ALLOW_NEGATIVE_Z
         double shift_z = m->get_instance_min_z(i.second);
+#if DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
+        if (m_process->current_printer_technology() == ptSLA || shift_z > 0.0) {
+#else
         if (shift_z > 0.0) {
+#endif // DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
             Vec3d shift(0.0, 0.0, -shift_z);
 #else
         Vec3d shift(0.0, 0.0, -m->get_instance_min_z(i.second));
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 32ecef4381..ab1d657e4a 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -5816,7 +5816,11 @@ void Plater::changed_object(int obj_idx)
     // recenter and re - align to Z = 0
     auto model_object = p->model.objects[obj_idx];
 #if ENABLE_ALLOW_NEGATIVE_Z
+#if DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
+    model_object->ensure_on_bed(this->p->printer_technology != ptSLA);
+#else
     model_object->ensure_on_bed(true);
+#endif // DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
 #else
     model_object->ensure_on_bed();
 #endif // ENABLE_ALLOW_NEGATIVE_Z
diff --git a/src/slic3r/GUI/Selection.cpp b/src/slic3r/GUI/Selection.cpp
index 8d7878650b..13512d534b 100644
--- a/src/slic3r/GUI/Selection.cpp
+++ b/src/slic3r/GUI/Selection.cpp
@@ -12,6 +12,9 @@
 #include "Plater.hpp"
 
 #include "libslic3r/Model.hpp"
+#if DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
+#include "libslic3r/PresetBundle.hpp"
+#endif // DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
 
 #include <GL/glew.h>
 
@@ -893,10 +896,11 @@ void Selection::scale(const Vec3d& scale, TransformationType transformation_type
     else if (m_mode == Volume)
         synchronize_unselected_volumes();
 #endif // !DISABLE_INSTANCES_SYNCH
-
-#if !ENABLE_ALLOW_NEGATIVE_Z
-    ensure_on_bed();
-#endif // !ENABLE_ALLOW_NEGATIVE_Z
+    
+#if DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
+    if (wxGetApp().preset_bundle->printers.get_edited_preset().printer_technology() == ptSLA)
+        ensure_on_bed();
+#endif // DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
 
     this->set_bounding_boxes_dirty();
 }
@@ -2059,7 +2063,10 @@ void Selection::synchronize_unselected_instances(SyncRotationType sync_rotation_
                 // z only rotation -> synch instance z
                 // The X,Y rotations should be synchronized from start to end of the rotation.
                 assert(is_rotation_xy_synchronized(rotation, v->get_instance_rotation()));
-                v->set_instance_offset(Z, volume->get_instance_offset().z());
+#if DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
+                if (wxGetApp().preset_bundle->printers.get_edited_preset().printer_technology() != ptSLA)
+#endif // DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
+                    v->set_instance_offset(Z, volume->get_instance_offset().z());
                 break;
 #else
                 // z only rotation -> keep instance z