Thank you for reaching out to the Community to report this issue, whkim. I appreciate the effort you put into trying different browsers to see if deleting the attachment would resolve the problem.

When you delete an attachment from the attachment list, it will automatically be removed, regardless of whether it’s linked to a transaction.

Since the deleted attachment continues to appear despite receiving a success message and testing across two different browsers, I recommend reaching out to our live support team to report this and allow them to perform a closer review of the issue. They have the specialized tools to examine the root cause and provide you with a real-time resolution.

Here's how you can connect with them:

1. Click the (?) Help icon.
   
2. Go to the Assistant tab, enter your concern, and then click No to reveal the option to Talk to a Human.
3. Hit the Talk to a Human button.
   
4. Click the Contact Support Team link.
   

To find the best time to connect, here are our support hours:

• Phone support:
  • Weekdays from 8:00 AM to 7:00 PM.
     
• Start a chat with a Support expert:
  • Weekdays from 8:00 AM to 10:00 PM.
  • Weekends from 8:00 AM to 6:00 PM.

Should you need any more help, feel free to reply to the thread.