diff --git a/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/SystemSignatures.tsx b/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/SystemSignatures.tsx
index 3800b871..3e880623 100644
--- a/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/SystemSignatures.tsx
+++ b/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/SystemSignatures.tsx
@@ -16,6 +16,7 @@ import {
   SIGNATURE_DELETION_TIMEOUTS,
 } from '@/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/constants.ts';
 import { OutCommand, OutCommandHandler } from '@/hooks/Mapper/types/mapHandlers';
+import { ExtendedSystemSignature } from '@/hooks/Mapper/types';
 
 /**
  * Custom hook for managing pending signature deletions and undo countdown.
@@ -27,16 +28,32 @@ function useSignatureUndo(
 ) {
   const [countdown, setCountdown] = useState<number>(0);
   const [pendingIds, setPendingIds] = useState<Set<string>>(new Set());
+  const [deletedSignatures, setDeletedSignatures] = useState<ExtendedSystemSignature[]>([]);
   const intervalRef = useRef<number | null>(null);
 
-  const addDeleted = useCallback((ids: string[]) => {
+  const addDeleted = useCallback((signatures: ExtendedSystemSignature[]) => {
+    const newIds = signatures.map(sig => sig.eve_id);
     setPendingIds(prev => {
       const next = new Set(prev);
-      ids.forEach(id => next.add(id));
+      newIds.forEach(id => next.add(id));
       return next;
     });
+    setDeletedSignatures(prev => [...prev, ...signatures]);
   }, []);
 
+  // Clear deleted signatures when system changes
+  useEffect(() => {
+    if (systemId) {
+      setDeletedSignatures([]);
+      setPendingIds(new Set());
+      setCountdown(0);
+      if (intervalRef.current != null) {
+        clearInterval(intervalRef.current);
+        intervalRef.current = null;
+      }
+    }
+  }, [systemId]);
+
   // kick off or clear countdown whenever pendingIds changes
   useEffect(() => {
     // clear any existing timer
@@ -47,6 +64,7 @@ function useSignatureUndo(
 
     if (pendingIds.size === 0) {
       setCountdown(0);
+      setDeletedSignatures([]);
       return;
     }
 
@@ -63,6 +81,7 @@ function useSignatureUndo(
           clearInterval(intervalRef.current!);
           intervalRef.current = null;
           setPendingIds(new Set());
+          setDeletedSignatures([]);
           return 0;
         }
         return prev - 1;
@@ -85,6 +104,7 @@ function useSignatureUndo(
       data: { system_id: systemId, eve_ids: Array.from(pendingIds) },
     });
     setPendingIds(new Set());
+    setDeletedSignatures([]);
     setCountdown(0);
     if (intervalRef.current != null) {
       clearInterval(intervalRef.current);
@@ -95,6 +115,7 @@ function useSignatureUndo(
   return {
     pendingIds,
     countdown,
+    deletedSignatures,
     addDeleted,
     handleUndo,
   };
@@ -118,7 +139,11 @@ export const SystemSignatures = () => {
 
   const [systemId] = selectedSystems;
   const isSystemSelected = useMemo(() => selectedSystems.length === 1, [selectedSystems.length]);
-  const { pendingIds, countdown, addDeleted, handleUndo } = useSignatureUndo(systemId, currentSettings, outCommand);
+  const { pendingIds, countdown, deletedSignatures, addDeleted, handleUndo } = useSignatureUndo(
+    systemId,
+    currentSettings,
+    outCommand,
+  );
 
   useHotkey(true, ['z', 'Z'], (event: KeyboardEvent) => {
     if (pendingIds.size > 0 && countdown > 0) {
@@ -175,6 +200,7 @@ export const SystemSignatures = () => {
         <SystemSignaturesContent
           systemId={systemId}
           settings={currentSettings}
+          deletedSignatures={deletedSignatures}
           onLazyDeleteChange={handleLazyDeleteToggle}
           onCountChange={handleCountChange}
           onSignatureDeleted={addDeleted}
diff --git a/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/SystemSignaturesContent/SystemSignaturesContent.tsx b/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/SystemSignaturesContent/SystemSignaturesContent.tsx
index a46af2db..83c53c38 100644
--- a/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/SystemSignaturesContent/SystemSignaturesContent.tsx
+++ b/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/SystemSignaturesContent/SystemSignaturesContent.tsx
@@ -58,7 +58,8 @@ interface SystemSignaturesContentProps {
   onLazyDeleteChange?: (value: boolean) => void;
   onCountChange?: (count: number) => void;
   filterSignature?: (signature: SystemSignature) => boolean;
-  onSignatureDeleted?: (deletedIds: string[]) => void;
+  onSignatureDeleted?: (deletedSignatures: ExtendedSystemSignature[]) => void;
+  deletedSignatures?: ExtendedSystemSignature[];
 }
 
 export const SystemSignaturesContent = ({
@@ -71,6 +72,7 @@ export const SystemSignaturesContent = ({
   onCountChange,
   filterSignature,
   onSignatureDeleted,
+  deletedSignatures = [],
 }: SystemSignaturesContentProps) => {
   const [selectedSignatureForDialog, setSelectedSignatureForDialog] = useState<SystemSignature | null>(null);
   const [showSignatureSettings, setShowSignatureSettings] = useState(false);
@@ -127,8 +129,7 @@ export const SystemSignaturesContent = ({
     event.preventDefault();
     event.stopPropagation();
     if (onSignatureDeleted && selectedSignatures.length > 0) {
-      const deletedIds = selectedSignatures.map(s => s.eve_id);
-      onSignatureDeleted(deletedIds);
+      onSignatureDeleted(selectedSignatures);
     }
     handleDeleteSelected();
   });
@@ -158,9 +159,16 @@ export const SystemSignaturesContent = ({
 
   const handleSelectSignatures = useCallback(
     (e: { value: SystemSignature[] }) => {
-      selectable ? onSelect?.(e.value[0]) : setSelectedSignatures(e.value as ExtendedSystemSignature[]);
+      // Filter out deleted signatures from selection
+      const selectableSignatures = e.value.filter(
+        sig => !deletedSignatures.some(deleted => deleted.eve_id === sig.eve_id),
+      );
+
+      selectable
+        ? onSelect?.(selectableSignatures[0])
+        : setSelectedSignatures(selectableSignatures as ExtendedSystemSignature[]);
     },
-    [onSelect, selectable, setSelectedSignatures],
+    [onSelect, selectable, setSelectedSignatures, deletedSignatures],
   );
 
   const { showDescriptionColumn, showUpdatedColumn, showCharacterColumn, showCharacterPortrait } = useMemo(
@@ -174,7 +182,11 @@ export const SystemSignaturesContent = ({
   );
 
   const filteredSignatures = useMemo<ExtendedSystemSignature[]>(() => {
-    return signatures.filter(sig => {
+    // Get the set of deleted signature IDs for quick lookup
+    const deletedIds = new Set(deletedSignatures.map(sig => sig.eve_id));
+
+    // Common filter function
+    const shouldShowSignature = (sig: ExtendedSystemSignature): boolean => {
       if (filterSignature && !filterSignature(sig)) {
         return false;
       }
@@ -203,9 +215,27 @@ export const SystemSignaturesContent = ({
         return true;
       }
 
-      return settings[sig.kind];
+      return settings[sig.kind] as boolean;
+    };
+
+    // Filter active signatures, excluding any that are in the deleted list
+    const activeSignatures = signatures.filter(sig => {
+      // Skip if this signature is in the deleted list
+      if (deletedIds.has(sig.eve_id)) {
+        return false;
+      }
+
+      return shouldShowSignature(sig);
     });
-  }, [signatures, hideLinkedSignatures, settings, filterSignature]);
+
+    // Add deleted signatures with pending deletion flag, applying the same filters
+    const deletedWithPendingFlag = deletedSignatures.filter(shouldShowSignature).map(sig => ({
+      ...sig,
+      pendingDeletion: true,
+    }));
+
+    return [...activeSignatures, ...deletedWithPendingFlag];
+  }, [signatures, hideLinkedSignatures, settings, filterSignature, deletedSignatures]);
 
   const onRowMouseEnter = useCallback((e: DataTableRowMouseEvent) => {
     setHoveredSignature(e.data as SystemSignature);
@@ -249,7 +279,8 @@ export const SystemSignaturesContent = ({
           {hasUnsupportedLanguage && (
             <div className="w-full flex justify-center items-center text-amber-500 text-xs p-1 bg-amber-950/20 border-b border-amber-800/30">
               <i className={PrimeIcons.EXCLAMATION_TRIANGLE + ' mr-1'} />
-              Non-English signatures detected. Some signatures may not display correctly. Double-click to edit signature details.
+              Non-English signatures detected. Some signatures may not display correctly. Double-click to edit signature
+              details.
             </div>
           )}
           <DataTable
diff --git a/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/hooks/useSystemSignaturesData.ts b/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/hooks/useSystemSignaturesData.ts
index 3aeddcb1..77e2eb80 100644
--- a/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/hooks/useSystemSignaturesData.ts
+++ b/assets/js/hooks/Mapper/components/mapInterface/widgets/SystemSignatures/hooks/useSystemSignaturesData.ts
@@ -20,7 +20,7 @@ export const useSystemSignaturesData = ({
   onLazyDeleteChange,
   onSignatureDeleted,
 }: Omit<UseSystemSignaturesDataProps, 'deletionTiming'> & {
-  onSignatureDeleted?: (deletedIds: string[]) => void;
+  onSignatureDeleted?: (deletedSignatures: ExtendedSystemSignature[]) => void;
 }) => {
   const { outCommand } = useMapRootState();
   const [signatures, setSignatures, signaturesRef] = useRefState<ExtendedSystemSignature[]>([]);
@@ -75,8 +75,7 @@ export const useSystemSignaturesData = ({
       if (removed.length > 0) {
         await processRemovedSignatures(removed, added, updated);
         if (onSignatureDeleted) {
-          const deletedIds = removed.map(sig => sig.eve_id);
-          onSignatureDeleted(deletedIds);
+          onSignatureDeleted(removed);
         }
       }
 
@@ -102,11 +101,23 @@ export const useSystemSignaturesData = ({
 
   const handleDeleteSelected = useCallback(async () => {
     if (!selectedSignatures.length) return;
+
+    // Call onSignatureDeleted with the full signature objects for visual feedback
+    if (onSignatureDeleted) {
+      onSignatureDeleted(selectedSignatures);
+    }
+
     const selectedIds = selectedSignatures.map(s => s.eve_id);
     const finalList = signatures.filter(s => !selectedIds.includes(s.eve_id));
+
+    // IMPORTANT: Send deletion to server BEFORE updating local state
+    // Otherwise signaturesRef.current will be updated and getActualSigs won't detect removals
     await handleUpdateSignatures(finalList, false, true);
+
+    // Update local state after server call
+    setSignatures(finalList);
     setSelectedSignatures([]);
-  }, [handleUpdateSignatures, selectedSignatures, signatures]);
+  }, [handleUpdateSignatures, selectedSignatures, signatures, onSignatureDeleted, setSignatures]);
 
   const handleSelectAll = useCallback(() => {
     setSelectedSignatures(signatures);
@@ -130,11 +141,11 @@ export const useSystemSignaturesData = ({
       return;
     }
     handleGetSignatures();
-  }, [systemId]);
+  }, [handleGetSignatures, setSignatures, systemId, undoPending]);
 
   useEffect(() => {
     onCountChange?.(signatures.length);
-  }, [signatures]);
+  }, [onCountChange, signatures]);
 
   return {
     signatures: signatures.filter(sig => !sig.deleted),