diff --git a/changelog.json b/changelog.json
index 74c10db..e4ae2d5 100644
--- a/changelog.json
+++ b/changelog.json
@@ -2,8 +2,12 @@
   {
     "version": "0.25.0",
     "date": "",
-    "en": [],
-    "fr": []
+    "en": [
+      "Cluster: \"Hide worked\" no longer hides a spot that is a new prefix, county, grid or park in an entity already worked."
+    ],
+    "fr": [
+      "Cluster : « Masquer les contactés » ne masque plus un spot qui est un nouveau préfixe, comté, carré ou parc dans une contrée déjà faite."
+    ]
   },
   {
     "version": "0.24.9",
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 872fd07..e228e2a 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -90,7 +90,7 @@ import { ExportFieldsDialog } from '@/components/ExportFieldsDialog';
 import { ShutdownProgress } from '@/components/ShutdownProgress';
 import { ClusterGrid } from '@/components/ClusterGrid';
 import { cleanSpotter, inferSpotMode, spotModeCategory, spotStatusKey } from '@/lib/spot';
-import { applySpotDisplay, readSpotDisplayOptions, SPOT_DISPLAY_OPTIONS_EXPOSED } from '@/lib/spotDisplay';
+import { applySpotDisplay, readSpotDisplayOptions, spotIsWorked, SPOT_DISPLAY_OPTIONS_EXPOSED } from '@/lib/spotDisplay';
 import { GetRowColors } from '../wailsjs/go/main/App';
 import { WorkedBeforeGrid } from '@/components/WorkedBeforeGrid';
 import { NetControlPanel } from '@/components/NetControlPanel';
@@ -4780,7 +4780,16 @@ export default function App() {
         const k = spotStatusKey(s.dx_call, s.band ?? '', s.comment ?? '', s.freq_hz);
         const e = spotStatus[k];
         if (!e) return false;
-        if (e.worked_call || e.status === 'worked') return false;
+        // A spot that is NEW for something is not "worked", whatever the entity
+        // says. The extra markers are orthogonal to the entity status — the same
+        // rule the band map already states — so a new prefix, county, grid or
+        // park in an entity worked years ago is exactly what an operator is
+        // hunting, and hiding it is the opposite of what was asked.
+        //
+        // Reported on BH2SWB and 4X9AA: both flagged NEW PFX, neither ever
+        // worked, both vanished the moment "hide worked" went on.
+        const isNew = !!(e.new_pota || e.new_county || e.new_pfx || e.new_grid);
+        if (!isNew && (e.worked_call || e.status === 'worked')) return false;
       }
       return true;
     }
diff --git a/frontend/src/lib/spotDisplay.ts b/frontend/src/lib/spotDisplay.ts
index c44426d..2c5f003 100644
--- a/frontend/src/lib/spotDisplay.ts
+++ b/frontend/src/lib/spotDisplay.ts
@@ -74,3 +74,16 @@ export function applySpotDisplay<T extends Entry>(s: T, o: SpotDisplayOptions):
   }
   return e;
 }
+
+// spotIsWorked answers "does this spot bring me nothing?", which is what the
+// "hide worked" filter is really asking.
+//
+// The extra markers are ORTHOGONAL to the entity status — a spot can be a worked
+// entity AND a new park, prefix, county or grid — so they win. Without that, a
+// new prefix in an entity worked years ago vanished the moment the filter went
+// on, which is the opposite of what an operator hunting prefixes wants.
+export function spotIsWorked(e: Entry): boolean {
+  if (!e) return false;
+  if (e.new_pota || e.new_county || e.new_pfx || e.new_grid) return false;
+  return !!e.worked_call || e.status === 'worked';
+}