diff --git a/src/slic3r/GUI/BackgroundSlicingProcess.hpp b/src/slic3r/GUI/BackgroundSlicingProcess.hpp
index 72f6884de3..d11d1d1c33 100644
--- a/src/slic3r/GUI/BackgroundSlicingProcess.hpp
+++ b/src/slic3r/GUI/BackgroundSlicingProcess.hpp
@@ -89,8 +89,8 @@ public:
 	~BackgroundSlicingProcess();
 
 	void set_temp_output_path(int bed_idx);
-	void set_fff_print(Print* print) { if (m_fff_print != print) stop(); m_fff_print = print; m_print = dynamic_cast<PrintBase*>(print); }
-    void set_sla_print(SLAPrint *print) { if (m_sla_print != print) stop(); m_sla_print = print; m_print = dynamic_cast<PrintBase*>(print); }
+	void set_fff_print(Print* print) { if (m_fff_print != print) stop(); m_fff_print = print; }
+    void set_sla_print(SLAPrint *print) { if (m_sla_print != print) stop(); m_sla_print = print; }
 	void set_thumbnail_cb(ThumbnailsGeneratorCallback cb) { m_thumbnail_cb = cb; }
 	void set_gcode_result(GCodeProcessorResult* result) { m_gcode_result = result; }
 
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index c22cf93413..ff12a5673d 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -6578,9 +6578,12 @@ void Plater::connect_gcode_all() {
 
     Print *original_print{&active_fff_print()};
     const int original_bed{s_multiple_beds.get_active_bed()};
+    PrinterTechnology original_technology{this->printer_technology()};
+
     ScopeGuard guard{[&](){
         this->p->background_process.set_fff_print(original_print);
         s_multiple_beds.set_active_bed(original_bed);
+        this->p->background_process.select_technology(original_technology);
     }};
 
     for (std::size_t print_index{0};  print_index < this->get_fff_prints().size(); ++print_index) {
@@ -6590,6 +6593,7 @@ void Plater::connect_gcode_all() {
         }
         this->p->background_process.set_fff_print(print.get());
         this->p->background_process.set_temp_output_path(print_index);
+        this->p->background_process.select_technology(this->p->printer_technology);
 
         PrintHostJob upload_job;
         upload_job.upload_data = upload_job_template.upload_data;