diff --git a/src/api/nextcloud.ts b/src/api/nextcloud.ts
index 8d00132..6c03367 100644
--- a/src/api/nextcloud.ts
+++ b/src/api/nextcloud.ts
@@ -512,12 +512,17 @@ export class NextcloudAPI {
     // Move attachment folder if it exists
     const noteIdStr = String(note.id);
     const justFilename = noteIdStr.split('/').pop() || noteIdStr;
-    const sanitizedNoteId = justFilename.replace(/\.(md|txt)$/, '').replace(/[^\w\s-]/g, '_');
+    const filenameWithoutExt = justFilename.replace(/\.(md|txt)$/, '');
+    const sanitizedNoteId = filenameWithoutExt.replace(/[^a-zA-Z0-9_-]/g, '_');
     const attachmentFolder = `.attachments.${sanitizedNoteId}`;
     
     const oldAttachmentPath = `/remote.php/dav/files/${this.username}/Notes${oldCategoryPath}/${attachmentFolder}`;
     const newAttachmentPath = `/remote.php/dav/files/${this.username}/Notes${newCategoryPath}/${attachmentFolder}`;
     
+    console.log(`Attempting to move attachment folder:`);
+    console.log(`  From: ${oldAttachmentPath}`);
+    console.log(`  To: ${newAttachmentPath}`);
+    
     try {
       const attachmentResponse = await tauriFetch(`${this.serverURL}${oldAttachmentPath}`, {
         method: 'MOVE',
@@ -527,12 +532,15 @@ export class NextcloudAPI {
         },
       });
       
+      console.log(`Attachment folder MOVE response status: ${attachmentResponse.status}`);
+      
       if (attachmentResponse.ok || attachmentResponse.status === 201 || attachmentResponse.status === 204) {
-        console.log(`Moved attachment folder: ${attachmentFolder}`);
+        console.log(`✓ Successfully moved attachment folder: ${attachmentFolder}`);
+      } else {
+        console.log(`✗ Failed to move attachment folder (status ${attachmentResponse.status})`);
       }
     } catch (e) {
-      // Attachment folder might not exist, that's okay
-      console.log(`No attachment folder to move for note: ${note.filename}`);
+      console.log(`✗ Error moving attachment folder:`, e);
     }
 
     return {