diff --git a/src/data/backwardsCompatibility/backwardsCompatibility.js b/src/data/backwardsCompatibility/backwardsCompatibility.js
index e7450539b16cc3d10349ddda25dff2f55737269a..218dcf52171c1f9b2c4c25fa21a054641eecd21c 100644
--- a/src/data/backwardsCompatibility/backwardsCompatibility.js
+++ b/src/data/backwardsCompatibility/backwardsCompatibility.js
@@ -61,8 +61,8 @@ App.Update.backwardsCompatibility = function() {
 		div = App.UI.DOM.appendNewElement("div", f, `Updating global variables... `);
 		App.Update.globalVariables(div);
 
-		div = App.UI.DOM.appendNewElement("div", f, `Updating slave variables... `);
-		App.Update.slaveVariables(div);
+		div = App.UI.DOM.appendNewElement("div", f, `Checking slave record type, updating indices... `);
+		App.Update.slaveIndices(div);
 
 		div = App.UI.DOM.appendNewElement("div", f, `Updating slave records... `);
 		App.Update.slaveRecords(div);
@@ -1344,50 +1344,40 @@ App.Update.globalVariables = function(node) {
 	node.append(`Done!`);
 };
 
-App.Update.slaveVariables = function(node) {
-	/* Adding a new variable? Consider putting it in datatypeCleanupJS.tw instead of here */
+App.Update.slaveIndices = function(node) {
 	for (let bci = 0; bci < V.slaves.length; bci++) {
-		let Slave = V.slaves[bci];
-
-		if (typeof Slave !== "object") {
+		if (typeof V.slaves[bci] !== "object") {
 			V.slaves.deleteAt(bci);
 			bci--;
 			continue;
 		}
-
-		App.Update.Slave(Slave);
-
-		V.slaves[bci] = Slave;
 	}
 	V.slaveIndices = slaves2indices();
 	node.append(`Done!`);
 };
 
 App.Update.slaveRecords = function(node) {
-	V.slaves.forEach((slave) => {
+	const detachedSlaves = [
+		V.hostage,
+		V.slaveAfterRA,
+		V.boomerangSlave,
+		V.traitor,
+		V.shelterSlave
+	];
+
+	const updateRecord = (slave) => {
+		App.Update.Slave(slave);
 		App.Entity.Utils.SlaveDataSchemeCleanup(slave);
 		SlaveDatatypeCleanup(slave);
-	});
-	if (V.hostage !== 0) {
-		App.Update.Slave(V.hostage);
-		App.Entity.Utils.SlaveDataSchemeCleanup(V.hostage);
-		SlaveDatatypeCleanup(V.hostage);
-	}
-	if (typeof V.slaveAfterRA !== "undefined") {
-		App.Update.Slave(V.slaveAfterRA);
-		App.Entity.Utils.SlaveDataSchemeCleanup(V.slaveAfterRA);
-		SlaveDatatypeCleanup(V.slaveAfterRA);
-	}
-	if (V.boomerangSlave !== 0) {
-		App.Update.Slave(V.boomerangSlave);
-		App.Entity.Utils.SlaveDataSchemeCleanup(V.boomerangSlave);
-		SlaveDatatypeCleanup(V.boomerangSlave);
-	}
-	if (V.traitor !== 0) {
-		App.Update.Slave(V.traitor);
-		App.Entity.Utils.SlaveDataSchemeCleanup(V.traitor);
-		SlaveDatatypeCleanup(V.traitor);
+	};
+
+	V.slaves.forEach((slave) => updateRecord(slave));
+	for (const slave of detachedSlaves) {
+		if (typeof slave !== "undefined" && slave !== 0) {
+			updateRecord(slave);
+		}
 	}
+
 	node.append(`Done!`);
 
 	if (V.incubator.tanks.length > 0) {
diff --git a/src/player/js/PlayerState.js b/src/player/js/PlayerState.js
index 501e71413c0d047a7bf65584a8a0d4bf15014619..f11ed16acd972375d15b25f9f5b93c9324354535 100644
--- a/src/player/js/PlayerState.js
+++ b/src/player/js/PlayerState.js
@@ -1294,6 +1294,11 @@ App.Entity.PlayerState = class PlayerState {
 		 * @type {FC.Diet}
 		 */
 		this.diet = "healthy";
+		/**
+		 * * "normal"
+		 * * "atrophied"
+		 */
+		this.digestiveSystem = "normal";
 		/**
 		 * * -2: heavy male hormones
 		 * * -1: male hormones