diff --git a/src/data/backwardsCompatibility/backwardsCompatibility.js b/src/data/backwardsCompatibility/backwardsCompatibility.js
index bb258db12d9a57cf4cc1fd68bddb0751b9173788..434d372d8b6f463e0ec283c5fbcd8c6b112e862d 100644
--- a/src/data/backwardsCompatibility/backwardsCompatibility.js
+++ b/src/data/backwardsCompatibility/backwardsCompatibility.js
@@ -1144,8 +1144,8 @@ App.Update.globalVariables = function(node) {
 	}
 
 	// Slave death
-	if (!isNaN(V.slaveDeath)) {
-		V.slaveDeath = new Map()
+	if (!(V.slaveDeath instanceof Map)) {
+		V.slaveDeath = new Map();
 	}
 
 	FacilityDatatypeCleanup();
@@ -1554,26 +1554,26 @@ App.Update.RAassistantData = function(node) {
 App.Update.arcologyLocation = function(node) {
 	if (V.continent === "Europe") {
 		const prompt = App.UI.DOM.appendNewElement('div', node);
-prompt.id = "location-prompt"; // so we can replace the whole prompt later after the user clicks a link
-V.continent = "Central Europe"; // picks a valid default right now in case the user doesn't interact
-const altLocations = [
-    "Southern Europe",
-    "Western Europe",
-    "Eastern Europe",
-	"Scandinavia",
-	"Central Europe"
-];
-function makeLinkForLocation(l) {
-    return App.UI.DOM.link(l, () => {
-        V.continent = l;
-        App.UI.DOM.replace("#location-prompt", `Arcology location specified at ${l}.`);
-    });
-};
-prompt.append(`General Arcology location detected: Europe. Please specify exact location of arcology. Currently selected: ${V.continent}. Other Possibilities: `,
-    App.UI.DOM.generateLinksStrip(altLocations.map(l => makeLinkForLocation(l))));
-		}
-	else {
-		node.append(`Done!`); }
+		prompt.id = "location-prompt"; // so we can replace the whole prompt later after the user clicks a link
+		V.continent = "Central Europe"; // picks a valid default right now in case the user doesn't interact
+		const altLocations = [
+			"Southern Europe",
+			"Western Europe",
+			"Eastern Europe",
+			"Scandinavia",
+			"Central Europe"
+		];
+		prompt.append(`General Arcology location detected: Europe. Please specify exact location of arcology. Currently selected: ${V.continent}. Other Possibilities: `,
+			App.UI.DOM.generateLinksStrip(altLocations.map(l => makeLinkForLocation(l))));
+	} else {
+		node.append(`Done!`);
+	}
+	function makeLinkForLocation(l) {
+		return App.UI.DOM.link(l, () => {
+			V.continent = l;
+			App.UI.DOM.replace("#location-prompt", `Arcology location specified at ${l}.`);
+		});
+	}
 };
 
 App.Update.oldVersions = function(node) {