diff --git a/src/visGeometry/index.ts b/src/visGeometry/index.ts
index 54260836..1fd2aa31 100644
--- a/src/visGeometry/index.ts
+++ b/src/visGeometry/index.ts
@@ -1906,6 +1906,8 @@ class VisGeometry {
     }
 
     public clearForNewTrajectory(): void {
+        // only gets called by the parent app by calling
+        // clearFile on the controller
         this.legacyRenderer.beginUpdate(this.scene);
         this.legacyRenderer.endUpdate(this.scene);
         this.resetMapping();
@@ -1914,7 +1916,7 @@ class VisGeometry {
         this.visAgentInstances.clear();
         this.visAgents = [];
         this.currentSceneData = nullCachedFrame();
-
+        this.availableAgentPool = [];
         this.dehighlight();
     }