diff --git a/src/providers/OilFileSystemProvider.ts b/src/providers/OilFileSystemProvider.ts
index 3c4889f..e44eafb 100644
--- a/src/providers/OilFileSystemProvider.ts
+++ b/src/providers/OilFileSystemProvider.ts
@@ -11,8 +11,6 @@ export class OilFileSystemProvider implements vscode.FileSystemProvider {
   >();
   readonly onDidChangeFile = this._onDidChangeFile.event;
 
-  private _documents = new Map<string, Uint8Array>();
-
   // Create or update an in-memory document
   writeFile(_uri: vscode.Uri, _content: Uint8Array): void {}
 
@@ -24,11 +22,6 @@ export class OilFileSystemProvider implements vscode.FileSystemProvider {
       const newOilState = initOilState();
       setOilState(newOilState);
       oilState = newOilState;
-      this._documents.clear(); // Clear cache on new state
-    }
-    const content = this._documents.get(uri.toString());
-    if (content) {
-      return content;
     }
     const folderPath = oilUriToDiskPath(uri);
     const directoryContent = await getDirectoryListing(folderPath, oilState);
@@ -36,13 +29,11 @@ export class OilFileSystemProvider implements vscode.FileSystemProvider {
       throw vscode.FileSystemError.FileNotFound(uri);
     }
     const buffer = Buffer.from(directoryContent);
-    this._documents.set(uri.toString(), buffer);
     return buffer;
   }
 
   // Delete an in-memory document
   delete(uri: vscode.Uri): void {
-    this._documents.delete(uri.toString());
     this._onDidChangeFile.fire([{ type: vscode.FileChangeType.Changed, uri }]);
   }
 
diff --git a/src/test/extension.test.ts b/src/test/extension.test.ts
index 73dd5b1..93b1d4e 100644
--- a/src/test/extension.test.ts
+++ b/src/test/extension.test.ts
@@ -703,7 +703,7 @@ suite("oil.code", () => {
       assert.ok(previewEditor, "No editor found for the preview tab");
       assert.strictEqual(
         previewEditor.document.getText(),
-        ["/000 ../", "/000 oil-file1.md", "/000 oil-file2.md"].join(newline),
+        ["/000 ../", "/002 oil-file1.md", "/003 oil-file2.md"].join(newline),
         "Preview content does not match expected content"
       );
     });
@@ -735,7 +735,7 @@ suite("oil.code", () => {
       assert.ok(previewEditor, "No editor found for the preview tab");
       assert.strictEqual(
         previewEditor.document.getText(),
-        ["/000 ../", "/000 oil-dir/"].join(newline),
+        ["/000 ../", "/001 oil-dir/"].join(newline),
         "Preview content does not match expected content"
       );
     });
diff --git a/src/utils/fileUtils.ts b/src/utils/fileUtils.ts
index e670eb3..59a3576 100644
--- a/src/utils/fileUtils.ts
+++ b/src/utils/fileUtils.ts
@@ -51,7 +51,7 @@ export async function getDirectoryListing(
   if (oilState.visitedPaths.has(folderPathUri)) {
     const previousListings = oilState.visitedPaths.get(folderPathUri)!;
     for (const file of previousListings) {
-      const fileName = file.slice(4);
+      const fileName = file.slice(5);
       if (listings.includes(fileName)) {
         existingFiles.set(fileName, file);
       }
@@ -68,13 +68,11 @@ export async function getDirectoryListing(
     }
 
     // Use and increment the global counter for each file/directory
-    const identifier = preview
-      ? GO_UP_IDENTIFIER
-      : `/${oilState.identifierCounter.toString().padStart(3, "0")}`;
+    const identifier = `/${oilState.identifierCounter
+      .toString()
+      .padStart(3, "0")}`;
 
-    if (!preview) {
-      oilState.identifierCounter++;
-    }
+    oilState.identifierCounter++;
 
     return `${identifier} ${name}`;
   });