diff --git a/src/OrcaSlicer.cpp b/src/OrcaSlicer.cpp
index cbbc702fde..4a2cd1ab96 100644
--- a/src/OrcaSlicer.cpp
+++ b/src/OrcaSlicer.cpp
@@ -3182,7 +3182,7 @@ int CLI::run(int argc, char **argv)
                     if (filament_options_with_variant.find(opt_key) != filament_options_with_variant.end()) {
                         std::vector<int> temp_variant_indice;
                         temp_variant_indice.resize(new_variant_count, -1);
-                        opt_vec_dst->set_with_restore_2(opt_vec_src, temp_variant_indice, old_start_indice[filament_index - 1], old_variant_count);
+                        opt_vec_dst->set_with_restore_2(opt_vec_src, temp_variant_indice, old_start_indice[filament_index - 1], old_variant_count, true);
 
                         if (opt_key == "filament_extruder_variant")
                             new_variant_counts[filament_index - 1] = opt_vec_src->size();
diff --git a/src/libslic3r/Config.hpp b/src/libslic3r/Config.hpp
index 13a70455bf..45bee05c2c 100644
--- a/src/libslic3r/Config.hpp
+++ b/src/libslic3r/Config.hpp
@@ -350,7 +350,7 @@ public:
     virtual void append(const ConfigOption *rhs) = 0;
     virtual void set(const ConfigOption* rhs, size_t start, size_t len) = 0;
     virtual void set_with_restore(const ConfigOptionVectorBase* rhs, std::vector<int>& restore_index, int stride) = 0;
-    virtual void set_with_restore_2(const ConfigOptionVectorBase* rhs, std::vector<int>& restore_index, int start, int len) = 0;
+    virtual void set_with_restore_2(const ConfigOptionVectorBase* rhs, std::vector<int>& restore_index, int start, int len, bool skip_error = false) = 0;
     virtual void set_only_diff(const ConfigOptionVectorBase* rhs, std::vector<int>& diff_index, int stride) = 0;
     virtual void set_with_nil(const ConfigOptionVectorBase* rhs, const ConfigOptionVectorBase* inherits, int stride) = 0;
     // Resize the vector of values, copy the newly added values from opt_default if provided.
@@ -508,7 +508,7 @@ public:
     //restore_index: which index in this vector need to be restored
     //start: which index in this vector need to be replaced
     //count: how many items in this vector need to be replaced
-    virtual void set_with_restore_2(const ConfigOptionVectorBase* rhs, std::vector<int>& restore_index, int start, int len) override
+    virtual void set_with_restore_2(const ConfigOptionVectorBase* rhs, std::vector<int>& restore_index, int start, int len, bool skip_error = false) override
     {
         if (rhs->type() == this->type()) {
             //backup original ones
@@ -527,10 +527,16 @@ public:
             }
 
             // Assign the new value from the rhs vector.
-            auto other = static_cast<const ConfigOptionVector<T>*>(rhs);
+            auto other = const_cast<ConfigOptionVector<T>*>(static_cast<const ConfigOptionVector<T>*>(rhs));
 
-            if (other->values.size() != (restore_index.size()))
-                throw ConfigurationError("ConfigOptionVector::set_with_restore_2(): Assigning from an vector with invalid restore_index size");
+            if (other->values.size() != (restore_index.size())) {
+                if (skip_error) {
+                    T default_v = other->values.front();
+                    other->values.resize(restore_index.size(), default_v);
+                }
+                else
+                    throw ConfigurationError("ConfigOptionVector::set_with_restore_2(): Assigning from an vector with invalid restore_index size");
+            }
 
             for (size_t i = 0; i < restore_index.size(); i++) {
                 if ((restore_index[i] != -1)&&(restore_index[i] < backup_values.size())) {