diff --git a/ui/raidboss/popup-text.ts b/ui/raidboss/popup-text.ts
index 017c4f3744..705b2cd3b1 100644
--- a/ui/raidboss/popup-text.ts
+++ b/ui/raidboss/popup-text.ts
@@ -704,23 +704,26 @@ export class PopupText {
     this.triggerSets.push(...this.options.Triggers);
 
     // Eliminate any trigger sets with duplicate ids, allowing later ones to override earlier ones.
-    const uniqueById = new Map<string, typeof this.triggerSets[number]>();
-    const noIdList: typeof this.triggerSets = [];
-    for (const triggerSet of this.triggerSets) {
-      if (triggerSet.id === undefined) {
-        noIdList.push(triggerSet);
-        continue;
-      }
-      const existing = uniqueById.get(triggerSet.id);
-      if (existing !== undefined) {
-        console.log(
-          `Overriding trigger set id '${triggerSet.id}' from '${existing.filename}' with '${triggerSet.filename}'`,
-        );
+    // Filter the list to keep the last instance of each ID while preserving order.
+    const lastVersionOfId = new Map<string, typeof this.triggerSets[number]>();
+    for (const set of this.triggerSets) {
+      if (set.id !== undefined) {
+        const existing = lastVersionOfId.get(set.id);
+        if (existing !== undefined) {
+          console.log(
+            `Overriding trigger set id '${set.id}' from '${existing.filename}' with '${set.filename}'`,
+          );
+        }
+        lastVersionOfId.set(set.id, set);
       }
-      uniqueById.set(triggerSet.id, triggerSet);
     }
-    this.triggerSets = [...noIdList, ...uniqueById.values()];
-    this.triggerSetsById = Object.fromEntries(uniqueById);
+
+    this.triggerSets = this.triggerSets.filter((set) => {
+      if (set.id === undefined)
+        return true;
+      return lastVersionOfId.get(set.id) === set;
+    });
+    this.triggerSetsById = Object.fromEntries(lastVersionOfId);
   }
 
   OnChangeZone(e: EventResponses['ChangeZone']): void {