Index: binaries/data/mods/public/simulation/components/TechnologyManager.js
===================================================================
--- binaries/data/mods/public/simulation/components/TechnologyManager.js
+++ binaries/data/mods/public/simulation/components/TechnologyManager.js
@@ -3,21 +3,6 @@
 TechnologyManager.prototype.Schema =
 	"<empty/>";
 
-TechnologyManager.prototype.Serialize = function()
-{
-	// The modifications cache will be affected by property reads from the GUI and other places so we shouldn't
-	// serialize it.
-
-	var ret = {};
-	for (var i in this)
-	{
-		if (this.hasOwnProperty(i))
-			ret[i] = this[i];
-	}
-	ret.modificationCache = {};
-	return ret;
-};
-
 TechnologyManager.prototype.Init = function()
 {
 	this.researchedTechs = {}; // technologies which have been researched
@@ -40,12 +25,44 @@
 
 	// Some technologies are automatically researched when their conditions are met.  They have no cost and are
 	// researched instantly.  This allows civ bonuses and more complicated technologies.
+	this.LoadAutoresearchedTechs(Engine.QueryInterface(SYSTEM_ENTITY, IID_DataTemplateManager).ListAllTechs());
+};
+
+TechnologyManager.prototype.Serialize = function()
+{
+	// The technology data will be affected by property reads from the GUI and other places so we shouldn't serialize it.
+	let data = {
+		"modificationCache": {},
+		"autoResearchTech": Object.keys(this.autoResearchTech)
+	};
+
+	for (let propertyName in this)
+		if (this.hasOwnProperty(propertyName) && !data[propertyName])
+			data[propertyName] = this[propertyName];
+
+	return data;
+};
+
+TechnologyManager.prototype.Deserialize = function(data)
+{
+	for (let propertyName in data)
+		if (propertyName != "autoResearchTech")
+			this[propertyName] = data[propertyName];
+
+	this.LoadAutoresearchedTechs(data.autoResearchTech);
+};
+
+TechnologyManager.prototype.LoadAutoresearchedTechs = function(techNames)
+{
+	let cmpDataTemplateManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_DataTemplateManager);
+
 	this.autoResearchTech = {};
-	var allTechs = Engine.QueryInterface(SYSTEM_ENTITY, IID_DataTemplateManager).GetAllTechs();
-	for (var key in allTechs)
+
+	for (let techName of techNames)
 	{
-		if (allTechs[key].autoResearch || allTechs[key].top)
-			this.autoResearchTech[key] = allTechs[key];
+		let tech = cmpDataTemplateManager.GetTechnologyTemplate(techName);
+		if (tech.autoResearch || tech.top)
+			this.autoResearchTech[techName] = tech;
 	}
 };