diff --git a/frontend/src/hooks/useFileManager.ts b/frontend/src/hooks/useFileManager.ts
index 83576bb4b..59e8c1cdb 100644
--- a/frontend/src/hooks/useFileManager.ts
+++ b/frontend/src/hooks/useFileManager.ts
@@ -137,29 +137,22 @@ export const useFileManager = () => {
       setSelectedFiles([]);
     };
 
-    const selectMultipleFiles = async (files: FileMetadata[], onFilesSelect: (files: File[]) => void, onStoredFilesSelect?: (filesWithMetadata: Array<{ file: File; originalId: string; metadata: FileMetadata }>) => void) => {
+    const selectMultipleFiles = async (files: FileMetadata[], onStoredFilesSelect: (filesWithMetadata: Array<{ file: File; originalId: string; metadata: FileMetadata }>) => void) => {
       if (selectedFiles.length === 0) return;
 
       try {
         // Filter by UUID and convert to File objects
         const selectedFileObjects = files.filter(f => selectedFiles.includes(f.id));
         
-        if (onStoredFilesSelect) {
-          // NEW: Use stored files flow that preserves IDs
-          const filesWithMetadata = await Promise.all(
-            selectedFileObjects.map(async (metadata) => ({
-              file: await convertToFile(metadata),
-              originalId: metadata.id,
-              metadata
-            }))
-          );
-          onStoredFilesSelect(filesWithMetadata);
-        } else {
-          // LEGACY: Old flow that generates new UUIDs (for backward compatibility)
-          const filePromises = selectedFileObjects.map(convertToFile);
-          const convertedFiles = await Promise.all(filePromises);
-          onFilesSelect(convertedFiles); // FileContext will assign new UUIDs
-        }
+        // Use stored files flow that preserves IDs
+        const filesWithMetadata = await Promise.all(
+          selectedFileObjects.map(async (metadata) => ({
+            file: await convertToFile(metadata),
+            originalId: metadata.id,
+            metadata
+          }))
+        );
+        onStoredFilesSelect(filesWithMetadata);
         
         clearSelection();
       } catch (error) {