diff --git a/src/libslic3r/Config.cpp b/src/libslic3r/Config.cpp
index dbe038c5b..46cbd9891 100644
--- a/src/libslic3r/Config.cpp
+++ b/src/libslic3r/Config.cpp
@@ -546,9 +546,18 @@ bool ConfigBase::set_deserialize_raw(const t_config_option_key &opt_key_src, con
     bool substituted = false;
     if (optdef->type == coBools && substitutions_ctxt.rule != ForwardCompatibilitySubstitutionRule::Disable) {
     	//FIXME Special handling of vectors of bools, quick and not so dirty solution before PrusaSlicer 2.3.2 release.
-    	auto result = opt->nullable() ? 
-    		static_cast<ConfigOptionBoolsNullable*>(opt)->deserialize_with_substitutions(value, append, true) :
-    		static_cast<ConfigOptionBools*>(opt)->deserialize_with_substitutions(value, append, true);
+    	bool nullable = opt->nullable();
+    	ConfigHelpers::DeserializationSubstitution default_value = ConfigHelpers::DeserializationSubstitution::DefaultsToFalse;
+    	if (optdef->default_value) {
+    		// Default value for vectors of booleans used in a "per extruder" context, thus the default contains just a single value.
+    		assert(dynamic_cast<const ConfigOptionVector<unsigned char>*>(optdef->default_value.get()));
+			auto &values = static_cast<const ConfigOptionVector<unsigned char>*>(optdef->default_value.get())->values;
+			if (values.size() == 1 && values.front() == 1)
+				default_value = ConfigHelpers::DeserializationSubstitution::DefaultsToTrue;
+		}
+    	auto result = nullable ?
+    		static_cast<ConfigOptionBoolsNullable*>(opt)->deserialize_with_substitutions(value, append, default_value) :
+    		static_cast<ConfigOptionBools*>(opt)->deserialize_with_substitutions(value, append, default_value);
     	success     = result != ConfigHelpers::DeserializationResult::Failed;
     	substituted = result == ConfigHelpers::DeserializationResult::Substituted;
     } else {
diff --git a/src/libslic3r/Config.hpp b/src/libslic3r/Config.hpp
index 7d66264f5..a3d86d145 100644
--- a/src/libslic3r/Config.hpp
+++ b/src/libslic3r/Config.hpp
@@ -97,6 +97,12 @@ namespace ConfigHelpers {
 		return boost::iequals(value, "enabled") || boost::iequals(value, "on");
 	}
 
+	enum DeserializationSubstitution {
+		Disabled,
+		DefaultsToFalse,
+		DefaultsToTrue
+	};
+
     enum DeserializationResult {
     	Loaded,
     	Substituted,
@@ -1425,7 +1431,7 @@ public:
         return vv;
     }
 
-    ConfigHelpers::DeserializationResult deserialize_with_substitutions(const std::string &str, bool append, bool substitute)
+    ConfigHelpers::DeserializationResult deserialize_with_substitutions(const std::string &str, bool append, ConfigHelpers::DeserializationSubstitution substitution)
     {
         if (! append)
             this->values.clear();
@@ -1444,8 +1450,8 @@ public:
         		new_value = true;
         	} else if (item_str == "0") {
         		new_value = false;
-        	} else if (substitute && ConfigHelpers::looks_like_enum_value(item_str)) {
-        		new_value = ConfigHelpers::enum_looks_like_true_value(item_str);
+        	} else if (substitution != ConfigHelpers::DeserializationSubstitution::Disabled && ConfigHelpers::looks_like_enum_value(item_str)) {
+        		new_value = ConfigHelpers::enum_looks_like_true_value(item_str) || substituted == ConfigHelpers::DeserializationSubstitution::DefaultsToTrue;
         		substituted = true;
         	} else
         		return ConfigHelpers::DeserializationResult::Failed;
@@ -1456,7 +1462,7 @@ public:
 
     bool deserialize(const std::string &str, bool append = false) override
     {
-    	return this->deserialize_with_substitutions(str, append, false) == ConfigHelpers::DeserializationResult::Loaded;
+    	return this->deserialize_with_substitutions(str, append, ConfigHelpers::DeserializationSubstitution::Disabled) == ConfigHelpers::DeserializationResult::Loaded;
     }
 
 protected:
diff --git a/src/slic3r/GUI/GUI.cpp b/src/slic3r/GUI/GUI.cpp
index 5b3058fd6..17a46d369 100644
--- a/src/slic3r/GUI/GUI.cpp
+++ b/src/slic3r/GUI/GUI.cpp
@@ -316,11 +316,15 @@ void show_substitutions_info(const PresetsConfigSubstitutions& presets_config_su
 	wxString changes;
 
 	auto preset_type_name = [](Preset::Type type) {
-		return	type == Slic3r::Preset::TYPE_PRINT			? _L("Print settings")		: 
-				type == Slic3r::Preset::TYPE_SLA_PRINT		? _L("SLA print settings")	: 
-				type == Slic3r::Preset::TYPE_FILAMENT		? _L("Filament")			: 
-				type == Slic3r::Preset::TYPE_SLA_MATERIAL	? _L("SLA material")		: 
-				type == Slic3r::Preset::TYPE_PRINTER		? _L("Printer")				: "" ;
+		switch (type) {
+			case Preset::TYPE_PRINT:			return _L("Print settings");
+			case Preset::TYPE_SLA_PRINT:		return _L("SLA print settings");
+			case Preset::TYPE_FILAMENT:			return _L("Filament");
+			case Preset::TYPE_SLA_MATERIAL:		return _L("SLA material");
+			case Preset::TYPE_PRINTER: 			return _L("Printer");
+			case Preset::TYPE_PHYSICAL_PRINTER:	return _L("Physical Printer");
+			default: assert(false);				return wxString();
+		}
 	};
 
 	for (const PresetConfigSubstitutions& substitution : presets_config_substitutions) {