diff --git a/src/js/slaveListing.js b/src/js/slaveListing.js
index b97674baaa0da8c76dccc5452ac654ad4a279026..d3014a8eb346b123b77832981fa0da080df1f7b2 100644
--- a/src/js/slaveListing.js
+++ b/src/js/slaveListing.js
@@ -757,29 +757,29 @@ App.UI.SlaveList.listNGPSlaves = function() {
 	}
 
 	if (V.slavesToImport > 0) {
-		const importedSlavesIndices = slaves.reduce((acc, s, i) => {
+		const importedSlavesIDs = slaves.reduce((acc, s) => {
 			if (s.assignment === NGPassignment) {
-				acc.push(i);
+				acc.push(s.ID);
 			}
 			return acc;
 		}, []);
-		SlaveSort.indices(importedSlavesIndices);
-		r += App.UI.tabbar.makeTab("remove", App.UI.SlaveList.render.listMarkup(importedSlavesIndices, [],
+		SlaveSort.IDs(importedSlavesIDs);
+		r += App.UI.tabbar.makeTab("remove", App.UI.SlaveList.render.listMarkup(importedSlavesIDs, [],
 			App.UI.SlaveList.makeNameDecorator(["emphasizedSlave", "pink"]),
-			(s, i) => App.UI.DOM.passageLink('Remove from import list', thisPassage,
-				() => { variables().slavesToImport -= 1; removeJob(variables().slaves[i], NGPassignment); }
+			(s) => App.UI.DOM.passageLink('Remove from import list', thisPassage,
+				() => { variables().slavesToImport -= 1; removeJob(s, NGPassignment); }
 			)));
 	} else {
 		r += App.UI.tabbar.makeTab("remove", `<em>No slaves will go with you to the new game</em>`);
 	}
 
 	if (V.slavesToImport < V.slavesToImportMax) {
-		const slavesToImportIndices = slaves.reduce((acc, s, i) => { if (s.assignment !== NGPassignment) { acc.push(i); } return acc; }, []);
-		SlaveSort.indices(slavesToImportIndices);
-		r += App.UI.tabbar.makeTab("assign", App.UI.SlaveList.render.listMarkup(slavesToImportIndices, [],
+		const slavesToImportIDs = slaves.reduce((acc, s) => { if (s.assignment !== NGPassignment) { acc.push(s.ID); } return acc; }, []);
+		SlaveSort.IDs(slavesToImportIDs);
+		r += App.UI.tabbar.makeTab("assign", App.UI.SlaveList.render.listMarkup(slavesToImportIDs, [],
 			App.UI.SlaveList.makeNameDecorator(["emphasizedSlave", "pink"]),
-			(s, i) => App.UI.DOM.passageLink('Add to import list', thisPassage,
-				() => { variables().slavesToImport += 1; assignJob(variables().slaves[i], NGPassignment); }
+			(s) => App.UI.DOM.passageLink('Add to import list', thisPassage,
+				() => { variables().slavesToImport += 1; assignJob(s, NGPassignment); }
 			)));
 	} else {
 		r += App.UI.tabbar.makeTab("assign", `<strong>Slave import limit reached</strong>`);